Enhanced dispersion of lignin in pet polyols for improved thermal insulation of polyurethane foams

Paper

Haridevan, Hima, Birnie, David, Evans, David A.C., Martin, Darren J. and Annamalai, Pratheep K.. 2021. "Enhanced dispersion of lignin in pet polyols for improved thermal insulation of polyurethane foams." Annual Technical Conference for Plastic Professionals (ANTEC 2021). Online 10 - 21 May 2021 United States.
Paper/Presentation Title

Enhanced dispersion of lignin in pet polyols for improved thermal insulation of polyurethane foams

Presentation TypePaper
AuthorsHaridevan, Hima, Birnie, David, Evans, David A.C., Martin, Darren J. and Annamalai, Pratheep K.
Journal Citationpp. 186-190
Number of Pages5
Year2021
Place of PublicationUnited States
ISBN9781713830757
Web Address (URL) of Paperhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85111559880&partnerID=40&md5=e11e7f93fecd71c419ed5df3c9f86c33
Conference/EventAnnual Technical Conference for Plastic Professionals (ANTEC 2021)
Event Details
Annual Technical Conference for Plastic Professionals (ANTEC 2021)
Delivery
In person
Event Date
10 to end of 21 May 2021
Event Location
Online
Abstract

The incorporation of technical lignin, a multifunctional natural polymer, into rigid polyurethane foam (RPUF) for the enhancement of thermal insulation performance has gained increasing interest in academia and industry. However, the structural complexity of technical lignin hinders its dispersion in the polyols commonly used for the preparation of RPUF.

Poor dispersion of technical lignin in polyols inhibits the chemical reactions and limits the potential improvement in the thermal and mechanical properties of RPUF. Herein we report enhanced dispersion of unmodified kraft lignin, at a loading of 3% wt. in a mixture of glycerol and an aromatic polyester polyol (20:80) for the preparation of RPUF. It has improved the insulation property by 30% while retaining its mechanical performance compared to the control RPUF without lignin.

Such a level of improvement, to the best of our knowledge, has not been reported in RPUF using chemically unmodified lignin to date. This is attributed to the enhanced dispersion of the kraft lignin in the polyol blend causing changes in the cell morphology of the resultant RPUF, as supported by microscopic and rheological analysis. To this end, the insights into the influence of kraft lignin on the polyol-precursor on the properties of the RPUF are discussed

KeywordsAlcohols
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020340302. Macromolecular materials
Public NotesFiles associated with this item cannot be displayed due to copyright restrictions.
Byline AffiliationsUniversity of Queensland
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A simple methodology for improving the performance and sustainability of rigid polyurethane foam by incorporating industrial lignin
Hayati, Amir Nemati, Evans, David Alwyn Charles, Laycock, Bronwyn, Martin, Darren James and Annamalai, Pratheep Kumar. 2018. "A simple methodology for improving the performance and sustainability of rigid polyurethane foam by incorporating industrial lignin." Industrial Crops and Products. 117, pp. 149-158. https://doi.org/10.1016/j.indcrop.2018.03.006
High surface area nanoporous carbon derived from high quality jute from Bangladesh
Khan, Junayet Hossain, Lin, Jianjian, Young, Christine, Matsagar, Babasaheb M., Wu, Kevin C.W., Dhepe, Paresh L., Islam, Md Tofazzal, Rahman, Md Mahbubur, Shrestha, Lok Kumar, Alshehri, Saad M., Ahamad, Tansir, Salunkhe, Rahul R., Kumar, Nanjundan Ashok, Martin, Darren J., Yamauchi, Yusuke and Hossain, Md Shahriar A.. 2018. "High surface area nanoporous carbon derived from high quality jute from Bangladesh." Materials Chemistry and Physics. 216, pp. 491-495. https://doi.org/10.1016/j.matchemphys.2018.05.082
Graphene-Wrapped Nanoporous Nickel-Cobalt Oxide Flakes for Electrochemical Supercapacitors
Alowasheeir, Azhar, Zakaria, Mohamed B., Lin, Jianjian, Chikyow, Toyohiro, Martin, Darren J., Alghamdi, Yousef Gamaan, Alshehri, Abdulmohsen Ali, Bando, Yoshio, Hossain, Md. Shahriar A., Wu, Kevin C.-W., Kumar, Nanjundan Ashok and Yamauchi, Yusuke. 2018. "Graphene-Wrapped Nanoporous Nickel-Cobalt Oxide Flakes for Electrochemical Supercapacitors." Chemistry Select. 3 (29), pp. 8505-8510. https://doi.org/10.1002/slct.201801174
The use of cellulose nanocrystals to enhance the thermal insulation properties and sustainability of rigid polyurethane foam
Septevani, Athanasia A., Evans, David A.C., Annamalai, Pratheep K. and Martin, Darren J.. 2017. "The use of cellulose nanocrystals to enhance the thermal insulation properties and sustainability of rigid polyurethane foam." Industrial Crops and Products. 107, pp. 114-121. https://doi.org/10.1016/j.indcrop.2017.05.039
Synthesis and characterization of cellulose nanocrystals as reinforcing agent in solely palm based polyurethane foam
Septevani, Athanasia Amanda, Annamalai, Pratheep K. and Martin, Darren J.. 2017. "Synthesis and characterization of cellulose nanocrystals as reinforcing agent in solely palm based polyurethane foam." 3rd International Symposium on Applied Chemistry (ISAC) 2017. Jakarta, Indonesia 23 - 24 Oct 2017 AIP Publishing. https://doi.org/10.1063/1.5011899
Conducting polymer–graphite binary and hybrid composites
Ramanujam, B.T.S. and Annamalai, Pratheep K.. 2017. "Conducting polymer–graphite binary and hybrid composites." Thakur, Vijay Kumar, Thakur, Manju Kumari and Pappu, Asokan (ed.) Hybrid Polymer Composite Materials. India. Elsevier. pp. 1-34
Influence of Moisture Dependency of Pressboard on Transformer Winding Clamping Pressure
Naranpanawe, Lakshitha, Ekanayake, Chandima, Saha, Tapan Kumar and Annamalai, Naranpanawe1, Chandima Ekanayake2, Tapan Kumar Saha1 and Pratheep K.. 2017. "Influence of Moisture Dependency of Pressboard on Transformer Winding Clamping Pressure." IEEE Transactions on Dielectrics and Electrical Insulation. 24 (5), pp. 3191-3200. https://doi.org/10.1109/Tdei.2017.006206
Cellulose Nanocrystals with Enhanced Thermal Stability Reinforced Thermoplastic Polyurethane
Amin, Khairatun Najwa, Annamalai, , Pratheep Kumar and Martin, Darren. 2017. "Cellulose Nanocrystals with Enhanced Thermal Stability Reinforced Thermoplastic Polyurethane." Malaysian Journal of Analytical Sciences. 21 (3), pp. 754-761. https://doi.org/10.17576/mjas-2017-2103-25
Cellulose Nanofibers as Rheology Modifiers and Enhancers of Carbonization Efficiency in Polyacrylonitrile
Jiang, Edward, Amiralian, Nasim, Maghe, Maxime, Laycock, Bronwyn, McFarland, Eric M, Fox, Bronwyn F, Martin, D.J. and Annamalai, Pratheep K.. 2017. "Cellulose Nanofibers as Rheology Modifiers and Enhancers of Carbonization Efficiency in Polyacrylonitrile." ACS Sustainable Chemistry and Engineering. 5 (4), pp. 3296-3304. https://doi.org/10.1021/acssuschemeng.6b03144
Reinforcement of natural rubber latex using lignocellulosic nanofibers isolated from spinifex grass
Hosseinmardi, Alireza, Annamalai, Pratheep K., Wang, Lianzhou, Martin, Darren and Amiralian, Nasim. 2017. "Reinforcement of natural rubber latex using lignocellulosic nanofibers isolated from spinifex grass." Nanoscale. 9 (27), pp. 9510-9519. https://doi.org/10.1039/c7nr02632c
Spinifex nanocellulose derived hard carbon anodes for high-performance sodium-ion batteries
Gaddam, Rohit Ranganathan., Jiang, Edward, Amiralian, Nasim, Annamalai, Pratheep K., Martin, Darren J., Nanjundan, Nanjundan and Zhao, X. S.. 2017. "Spinifex nanocellulose derived hard carbon anodes for high-performance sodium-ion batteries." Sustainable Energy & Fuels. 1 (5), pp. 1090-1097. https://doi.org/10.1039/c7se00169j
High aspect ratio nanocellulose from an extremophile spinifex grass by controlled acid hydrolysis
Amiralian, Nasim, Annamalai, . Pratheep K., Garvey, Christopher J., Jiang, Edward, Memmott, Paul and Martin, Darren J.. 2017. "High aspect ratio nanocellulose from an extremophile spinifex grass by controlled acid hydrolysis." Cellulose. 24 (9), pp. 3753-3766. https://doi.org/10.1007/s10570-017-1379-6
Effect of pressboard ageing on power transformer mechanical vibration characteristics
Naranpanawe, W. M. L. B., Bandara, K. M. K. S., Saha, T.K., Ekanayake, C. and Annamalai, Pratheep Kumar. 2016. "Effect of pressboard ageing on power transformer mechanical vibration characteristics." 2015 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC 2015). Brisbane, Australia 15 - 18 Nov 2015 Australia. https://doi.org/10.1109/APPEEC.2015.7380951
Dip-and-Drag Lateral Force Spectroscopy for Measuring Adhesive Forces between Nanofibers
Dolan, Grace K., Yakubov, Gleb E., Greene, George W., Amiralian, NasimNasim, Annamalai, Pratheep K., Martin, Darren J. and Stokes, Jason R.. 2016. "Dip-and-Drag Lateral Force Spectroscopy for Measuring Adhesive Forces between Nanofibers." Langmuir: the ACS journal of surfaces and colloids. 32 (50), pp. 13340-13348. https://doi.org/10.1021/acs.langmuir.6b03467
Understanding the Ageing Aspects of Natural Ester Based Insulation liquid in Power Transformer
Badana, Kapila, Ekanayake, Chandima, Saha, Tapan Kumar and Annamalai, Pratheep Kumar. 2016. "Understanding the Ageing Aspects of Natural Ester Based Insulation liquid in Power Transformer." IEEE Transactions on Dielectrics and Electrical Insulation. 23 (1), pp. 246-257. https://doi.org/10.1109/Tdei.2015.004744
Systematic production of high quality and low cost cellulose nanofibres and their potential applications
Amiralian, Nasim, Annamalai, Pratheep and Martin, Darren J.. 2016. "Systematic production of high quality and low cost cellulose nanofibres and their potential applications." TAPPI International Conference on Nanotechnology for Renewable Materials 2016. Grenoble, France 13 - 16 Jun 2016 France.
Scalable processing of thermoplastic polyurethane nanocomposites toughened with nanocellulose
Amin, Khairatun Najwa Mohd, Amiralian, Nasim, Annamalai, Pratheep K., Edwards, Grant, Chaleat, Celine and Martin, Darren J.. 2016. "Scalable processing of thermoplastic polyurethane nanocomposites toughened with nanocellulose." Chemical Engineering Journal. 302, pp. 406-416. https://doi.org/10.1016/j.cej.2016.05.067
Cleaner and scalable processing of cellulose nanocrystal reinforced thermoplastic polyurethane nanocomposites
Mohd Amin, Khairatun Najwa, Amin, Mohd, Annamalai, Pratheep Kumar, Edwards, Grant A.B., Chaleat, Celine and Martin, Darren J.. 2016. "Cleaner and scalable processing of cellulose nanocrystal reinforced thermoplastic polyurethane nanocomposites." TAPPI International Conference on Nanotechnology for Renewable Materials 2016. Grenoble, France 13 - 16 Jun 2016 France.
Polymers from Biomass: Characterization, Modification, Degradation, and Applications
Adsul, Mukund, Tuli, Deepak K., Annamalai, Pratheep K., Depan, Dilip and Shankar, Shiv. 2016. "Polymers from Biomass: Characterization, Modification, Degradation, and Applications." International Journal of Polymer Science. 2016. https://doi.org/10.1155/2016/1857297
A systematic study substituting polyether polyol with palm kernel oil based polyester polyol in rigid polyurethane foam
Septevani, Athanasia A., Evans, David A.C., Chaleat, Celine, Martin, Darren J. and Annamalai, Pratheep K.. 2015. "A systematic study substituting polyether polyol with palm kernel oil based polyester polyol in rigid polyurethane foam." Industrial Crops and Products. 66, pp. 16-26. https://doi.org/10.1016/j.indcrop.2014.11.053
Production of cellulose nanocrystals via a scalable mechanical method
Amin, Khairatun Najwa Mohd, Annamalai, Pratheep Kumar, Morrow, Isabel Catherine and Martin, Darren. 2015. "Production of cellulose nanocrystals via a scalable mechanical method." RSC Advances: an international journal to further the chemical sciences. 5 (70), pp. 57133-57140. https://doi.org/10.1039/c5ra06862b
Easily deconstructed, high aspect ratio cellulose nanofibres from Triodia pungens; an abundant grass of Australia's arid zone
Amiralian, Nasim, Annamalai, Pratheep K., Memmott, Paul, Taran, Elena, Schmidt, Susanne and Martin, Darren J.. 2015. "Easily deconstructed, high aspect ratio cellulose nanofibres from Triodia pungens; an abundant grass of Australia's arid zone." RSC Advances: an international journal to further the chemical sciences. 5 (41), pp. 32124-32132. https://doi.org/10.1039/c5ra02936h
Isolation of cellulose nanofibrils from Triodia pungens via different mechanical methods
Amiralian, Nasim, Annamalai, Pratheep K., Memmott, Paul and Martin, Darren. J.. 2015. "Isolation of cellulose nanofibrils from Triodia pungens via different mechanical methods ." Cellulose. 22 (4), pp. 2483-2498. https://doi.org/10.1007/s10570-015-0688-x
Erratum to “Optimization of resin extraction from an Australian arid grass ‘Triodia pungens’ and its preliminary evaluation as an anti-termite timber coating” [Ind. Crops Prod. 59 (2014) 241–247]
Amiralian, Nasim, Annamalai, Pratheep K., Fitzgerald, Chris, Memmott, Paul and Martin, Darren J.. 2015. "Erratum to “Optimization of resin extraction from an Australian arid grass ‘Triodia pungens’ and its preliminary evaluation as an anti-termite timber coating” [Ind. Crops Prod. 59 (2014) 241–247]." Industrial Crops and Products. 67, pp. 512-512. https://doi.org/10.1016/j.indcrop.2014.12.037
Optimisation of resin extraction from an Australian arid grass ‘Triodia pungens’ and its preliminary evaluation as an anti-termite timber coating
Amiralian, Nasim, Annamalai, Pratheep K., Fitzgerald, Chris, Memmott, Paul and Martin, Darren J.. 2014. "Optimisation of resin extraction from an Australian arid grass ‘Triodia pungens’ and its preliminary evaluation as an anti-termite timber coating." Industrial Crops and Products. 59, pp. 241-247. https://doi.org/10.1016/j.indcrop.2014.04.045
Stability of chitosan/montmorillonite nanohybrid towards enzymatic degradation on grafting with poly(lactic acid)
Depan, D., Annamalai, A. Pratheep, Singh, R. P. and Misra, R. D. K.. 2014. "Stability of chitosan/montmorillonite nanohybrid towards enzymatic degradation on grafting with poly(lactic acid)." Materials Science and Technology. 30 (5), pp. 587-592. https://doi.org/10.1179/1743284713y.0000000501
Can clay nanoparticles accelerate environmental biodegradation of polyolefins?
Annamalai, P. K. and Martin, D. J.. 2014. "Can clay nanoparticles accelerate environmental biodegradation of polyolefins?" Materials Science and Technology. 30 (5), pp. 593-602. https://doi.org/10.1179/1743284713y.0000000498
Water-Responsive Mechanically Adaptive Nanocomposites Based on Styrene–Butadiene Rubber and Cellulose Nanocrystals—Processing Matters
Annamalai, Pratheep K., Dagnon, Koffi L., Monemian, Seyedali, Foster, E. Johan, Rowan, Stuart J. and Weder, Christoph. 2014. "Water-Responsive Mechanically Adaptive Nanocomposites Based on Styrene–Butadiene Rubber and Cellulose Nanocrystals—Processing Matters ." ACS Applied Materials and Interfaces. 6 (2), pp. 967-76. https://doi.org/10.1021/am404382x
Studies on the feasibility of recycled polystyrene doped with NLO active meta-Nitroaniline for optoelectronics applications
Sureshkumar, M.S., Goyal, R.L., Negi, Y.s., Pratheepkumar, A., Reddy, K. Raghunatha, Singh, R.P., Dadge, J.W. and Aiyer, R.C.. 2011. "Studies on the feasibility of recycled polystyrene doped with NLO active meta-Nitroaniline for optoelectronics applications ." Polymers for Advanced Technologies. 22 (12), pp. 1865-1871. https://doi.org/10.1002/pat.1685
Bioinspired Mechanically Adaptive Polymer Nanocomposites with Water-Activated Shape-Memory Effect
Mendez, Julie, Annamalai, Pratheep K., Eichhorn, Stephen J., Rusli, Rafeadah, Rowan, Stuart J., Foste, E. Johan and Weder, Christoph. 2011. "Bioinspired Mechanically Adaptive Polymer Nanocomposites with Water-Activated Shape-Memory Effect." Macromolecules. 44 (17), pp. 6827-6835. https://doi.org/10.1021/ma201502k
Commercial aspects associated with bio-nanocomposites
Lonkar, Sunil P., Kumar, A. Pratheep and Singh, R. P.. 2011. "Commercial aspects associated with bio-nanocomposites." Nanocomposites with Biodegradable Polymers: Synthesis, Properties, and Future Perspectives. United Kingdom. Oxford University Press. pp. 400-420
Kinetics of mass transfer during vapour-induced phase separation (VIPS) process and its influence on poly-(vinylidene fluoride) (PVDF)membrane structure and surface morphology
Annamalai, Pratheep Kumar, Pochat-Bohatier, Celine, Bouyer, Denis, Li, Chia-Ling, Deratani, André and Wang, Da-Ming. 2011. "Kinetics of mass transfer during vapour-induced phase separation (VIPS) process and its influence on poly-(vinylidene fluoride) (PVDF)membrane structure and surface morphology ." Desalination and Water Treatment. 34 (1-3), pp. 204-210. https://doi.org/10.5004/dwt.2011.2809
Nanoscale particles for polymer degradation and stabilization—Trends and future perspectives
Annamalai, Annamalai Pratheep, Depan, Dilip, Tomer, Namrata Singh and Singh, Raj Pal. 2009. "Nanoscale particles for polymer degradation and stabilization—Trends and future perspectives ." Progress in Polymer Science. 34 (6), pp. 479-515. https://doi.org/10.1016/j.progpolymsci.2009.01.002
Cell proliferation and controlled drug release studies of nanohybrids based on chitosan-g-lactic acid and montmorillonite
Depan, Dilip, Annamalai, Annamalai Pratheep and Singh, Raj Pal. 2009. "Cell proliferation and controlled drug release studies of nanohybrids based on chitosan-g-lactic acid and montmorillonite." Acta Biomaterialia. 5 (1), pp. 93-100. https://doi.org/10.1016/j.actbio.2008.08.007
Single Step Synthesis and Properties of M/MFe2O4 and PVDF/M/MFe2O4 (M = Co, Ni) Magnetic Nanocomposites
Deka, Sasanka, Joy, P. A. and Annamalai, A. Pratheep. 2009. "Single Step Synthesis and Properties of M/MFe2O4 and PVDF/M/MFe2O4 (M = Co, Ni) Magnetic Nanocomposites ." Science of Advanced Materials. 1 (3), pp. 262-268. https://doi.org/10.1166/sam.2009.1053
Effect of γ-dose rate on crystallinity and morphological changes of γ-sterilized biomedical polypropylene
Alariqi, Sameh A.S., Annamalai, A. Pratheep, Rao, B.S.M. and Singh, R.P.. 2009. "Effect of γ-dose rate on crystallinity and morphological changes of γ-sterilized biomedical polypropylene." Polymer Degradation and Stability. 94 (2), pp. 272-277. https://doi.org/10.1016/j.polymdegradstab.2008.10.027
Biocomposites of cellulose reinforced starch: improvement of properties by photo-induced crosslinking
Kumar, Annamalai Pratheep and Singh, Raj Pal. 2008. "Biocomposites of cellulose reinforced starch: improvement of properties by photo-induced crosslinking." Bioresource Technology. 99 (18), pp. 8803-8809. https://doi.org/10.1016/j.biortech.2008.04.045
Novel hybrid of clay, cellulose, and thermoplastics. I. Preparation and characterization of composites of ethylene–propylene copolymer
Kumar, Annamalai Pratheep and Singh, Raj Pal. 2007. "Novel hybrid of clay, cellulose, and thermoplastics. I. Preparation and characterization of composites of ethylene–propylene copolymer." Journal of Applied Polymer Science. 104 (4), pp. 2672-2682. https://doi.org/10.1002/app.25659
Photo-stabilization of EPDM-clay nanocomposites: effect of antioxidant on the preparation and durability
Lonkar, Sunil P., Annamalai, A. Pratheep and Singh, Raj Pal. 2007. "Photo-stabilization of EPDM-clay nanocomposites: effect of antioxidant on the preparation and durability." Polymers for Advanced Technologies. 18 (11), pp. 891-900. https://doi.org/10.1002/pat.925
Stabilization of γ-sterilized biomedical polyolefins by synergistic mixtures of oligomeric stabilizers. Part II. Polypropylene matrix
Alariqi, Sameh A.S., Kumar, A. Pratheep, Rao, B.S.M. Rao and Singh, R.P.. 2007. "Stabilization of γ-sterilized biomedical polyolefins by synergistic mixtures of oligomeric stabilizers. Part II. Polypropylene matrix ." Polymer Degradation and Stability. 92 (2), pp. 299-309. https://doi.org/10.1016/j.polymdegradstab.2006.10.010
Photo-/Bio-degradability of Agro Waste and Ethylene–Propylene Copolymers Composites Under Abiotic and Biotic Environments
Kumar, A. Pratheep, Pandey, Jitendra K., Kumar, Bijendra and Singh, R. P.. 2006. "Photo-/Bio-degradability of Agro Waste and Ethylene–Propylene Copolymers Composites Under Abiotic and Biotic Environments." Journal of Polymers and the Environment. 14 (2), pp. 203-212. https://doi.org/10.1007/s10924-006-0012-9
Preparation and characterization of novel hybrid of chitosan-g-lactic acid and montmorillonite
Depan, Dilip, Annamalai, Annamalai Pratheep and Singh, Raj Pal. 2006. "Preparation and characterization of novel hybrid of chitosan-g-lactic acid and montmorillonite." Journal of Biomedical Materials Research Part A. 78 (2), pp. 372-82. https://doi.org/10.1002/jbm.a.30738
Stabilization of γ-sterilized biomedical polyolefins by synergistic mixtures of oligomeric stabilizers
Alariqi, Sameh. A.S., Annamalai, A. Pratheep, Rao, B.S.M., Tevtia, Amit K. and Singh, R.P.. 2006. "Stabilization of γ-sterilized biomedical polyolefins by synergistic mixtures of oligomeric stabilizers ." Polymer Degradation and Stability. 91 (10), pp. 2451-2464. https://doi.org/10.1016/j.polymdegradstab.2006.03.010
Biodegradation of γ-sterilised biomedical polyolefins under composting and fungal culture environments
Alariqi, Sameh A.S., Kumar, A. Pratheep, Rao, B.S.M. and Singh, R.P.. 2006. "Biodegradation of γ-sterilised biomedical polyolefins under composting and fungal culture environments." Polymer Degradation and Stability. 91 (5), pp. 1105-1116. https://doi.org/10.1016/j.polymdegradstab.2005.07.004
An overview on the degradability of polymer nanocomposites
Pandey, Jitendra K., Reddy, K. Raghunatha, Kumar, A. Pratheep and Singh, R.P.. 2005. "An overview on the degradability of polymer nanocomposites." Polymer Degradation and Stability. 88 (2), pp. 234-250. https://doi.org/10.1016/j.polymdegradstab.2004.09.013
Recent Advances in Biodegradable Nanocomposites
Pandey, Jitendra K., Kumar, A. Pratheep, Misra, Manjusri, Mohanty, Amar K., Drzal, Lawrence T. and Singh, Raj. 2005. "Recent Advances in Biodegradable Nanocomposites ." Journal of Nanoscience and Nanotechnology. 5 (4), pp. 497-526. https://doi.org/10.1166/jnn.2005.111
Degradability of composites, prepared from ethylene–propylene copolymer and jute fiber under accelerated aging and biotic environments
Annamalai, Annamalai Pratheep, Singh, Raj Pal and Sarwade, Bhimrao D.. 2005. "Degradability of composites, prepared from ethylene–propylene copolymer and jute fiber under accelerated aging and biotic environments." Materials Chemistry and Physics. 92 (2-3), pp. 458-469. https://doi.org/10.1016/j.matchemphys.2005.01.027
Synthesis, characterization, and performance evaluation of novel stabilized TDI-based polyurethane coatings under accelerated weathering
Kumar, A. Pratheep, Reddy, K. Raghunatha, Rana, Sravendra, Lonkar, Sunil P., Raut, K.G. and Singh, Raj Pal. 2005. "Synthesis, characterization, and performance evaluation of novel stabilized TDI-based polyurethane coatings under accelerated weathering." Journal of Vinyl and Additive Technology. 11 (1), pp. 13-20. https://doi.org/10.1002/vnl.20032
Biodegradation of packaging materials: Composting of polyolefins
Pandey, Jitendra K., Kumar, A. Pratheep and Singh, R.P.. 2003. "Biodegradation of packaging materials: Composting of polyolefins." Macromolecular Symposia. 197 (1), pp. 411-420. https://doi.org/10.1002/masy.200350735