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Poly(lactic acid)/cellulose nanocrystal composites via the Pickering emulsion approach: Rheological, thermal and mechanical properties.
Int J Biol Macromol. 2019 Sep 15; 137:197-204.IJ

Abstract

The use of nanocellulose is an attractive method to improve the characteristics of biodegradable polymers, but its effects are often affected by uneven dispersion. In this work, cellulose nanocrystals (CNCs) were evenly dispersed into poly(lactic acid) (PLA) via the Pickering emulsion approach. The PLA/CNC composites prepared were studied by rheological, thermal as well as mechanical measurements. Changes in the rheological characteristics of the composites showed that CNC promoted the transition of the composites from fluid to solid-like behavior at high temperatures. The introduction of 5 wt% CNC improved the crystallinity of PLA considerably and increased the onset temperature of crystallization by about 10 °C. The storage modulus of the composites increased throughout the entire temperature range of testing. Flexural modulus was improved considerably. All the results indicated that the Pickering emulsion approach improved the dispersion of CNC in the PLA matrix and CNC improved efficiently most properties of PLA.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.

Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, H-1519 Budapest, P.O. Box 286, Hungary; Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, H-1521 Budapest, P.O. Box 91, Hungary.

Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.

Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.

Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.

Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, H-1519 Budapest, P.O. Box 286, Hungary; Laboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, H-1521 Budapest, P.O. Box 91, Hungary. Electronic address: BPukanszky@mail.bme.hu.

Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.

Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China. Electronic address: suixf@dhu.edu.cn.

MeSH

Calorimetry, Differential ScanningCelluloseEmulsionsMechanical PhenomenaNanoparticlesPolyestersRheologySpectrum AnalysisTransition Temperature

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31255621

Citation

Zhang, Yunchong, et al. "Poly(lactic Acid)/cellulose Nanocrystal Composites Via the Pickering Emulsion Approach: Rheological, Thermal and Mechanical Properties." International Journal of Biological Macromolecules, vol. 137, 2019, pp. 197-204.

Zhang Y, Cui L, Xu H, et al. Poly(lactic acid)/cellulose nanocrystal composites via the Pickering emulsion approach: Rheological, thermal and mechanical properties. Int J Biol Macromol. 2019;137:197-204.

Zhang, Y., Cui, L., Xu, H., Feng, X., Wang, B., Pukánszky, B., Mao, Z., & Sui, X. (2019). Poly(lactic acid)/cellulose nanocrystal composites via the Pickering emulsion approach: Rheological, thermal and mechanical properties. International Journal of Biological Macromolecules, 137, 197-204. https://doi.org/10.1016/j.ijbiomac.2019.06.204

Zhang Y, et al. Poly(lactic Acid)/cellulose Nanocrystal Composites Via the Pickering Emulsion Approach: Rheological, Thermal and Mechanical Properties. Int J Biol Macromol. 2019 Sep 15;137:197-204. PubMed PMID: 31255621.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Poly(lactic acid)/cellulose nanocrystal composites via the Pickering emulsion approach: Rheological, thermal and mechanical properties. AU - Zhang,Yunchong, AU - Cui,Lu, AU - Xu,Hong, AU - Feng,Xueling, AU - Wang,Bijia, AU - Pukánszky,Béla, AU - Mao,Zhiping, AU - Sui,Xiaofeng, Y1 - 2019/06/27/ PY - 2019/05/08/received PY - 2019/06/18/revised PY - 2019/06/26/accepted PY - 2019/7/1/pubmed PY - 2020/1/18/medline PY - 2019/7/1/entrez KW - Crystallinity KW - Dispersion KW - Molecular mobility KW - Network formation KW - Reinforcement SP - 197 EP - 204 JF - International journal of biological macromolecules JO - Int J Biol Macromol VL - 137 N2 - The use of nanocellulose is an attractive method to improve the characteristics of biodegradable polymers, but its effects are often affected by uneven dispersion. In this work, cellulose nanocrystals (CNCs) were evenly dispersed into poly(lactic acid) (PLA) via the Pickering emulsion approach. The PLA/CNC composites prepared were studied by rheological, thermal as well as mechanical measurements. Changes in the rheological characteristics of the composites showed that CNC promoted the transition of the composites from fluid to solid-like behavior at high temperatures. The introduction of 5 wt% CNC improved the crystallinity of PLA considerably and increased the onset temperature of crystallization by about 10 °C. The storage modulus of the composites increased throughout the entire temperature range of testing. Flexural modulus was improved considerably. All the results indicated that the Pickering emulsion approach improved the dispersion of CNC in the PLA matrix and CNC improved efficiently most properties of PLA. SN - 1879-0003 UR - https://www.unboundmedicine.com/medline/citation/31255621/Poly_lactic_acid_/cellulose_nanocrystal_composites_via_the_Pickering_emulsion_approach:_Rheological_thermal_and_mechanical_properties_ DB - PRIME DP - Unbound Medicine ER -