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Effect of polymorphs of cellulose nanocrystal on the thermal properties of poly(lactic acid)/cellulose nanocrystal composites.
Eur Phys J E Soft Matter. 2016 12; 39(12):118.EP

Abstract

Cellulose nanocrystals (CNCs) with different polymorphs CNC I and II were fabricated from native and mercerized microcrystalline cellulose (MCC) by sulfuric acid hydrolysis. CNC I and II were successfully acetylated by a "green" method, which was performed in an ionic liquid of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4). X-ray diffraction (XRD) proved that the crystal structure of CNC I and II was maintained after acetylation. Transmission electron microscopy (TEM) showed the rod-like structure for acetylated CNC I and spherical crystal morphologies for acetylated CNC II. Thermogravimetric analysis (TGA) revealed that the thermal stability of CNC I and II was enhanced after acetylation. The effect of CNC polymorphs on the crystallization behavior and thermal stability of poly(lactic acid)/acetylated CNC (PLA/ACN) composites was investigated by differential scanning calorimetry (DSC) and TGA, respectively. It was found that compared to ACN I, ACN II was better able to promote the cold crystallization of PLA-based composites, and PLA/ ACN II possessed higher thermal stability.

Authors+Show Affiliations

Zhao J
School of Materials Science and Engineering, Shijiazhuang Tiedao University, 050043, Shijiazhuang, China. zhaojc@stdu.edu.cn.
Zhao Y
School of Materials Science and Engineering, Shijiazhuang Tiedao University, 050043, Shijiazhuang, China.
Wang Z
School of Materials Science and Engineering, Shijiazhuang Tiedao University, 050043, Shijiazhuang, China.
Peng Z
School of Materials Science and Engineering, Shijiazhuang Tiedao University, 050043, Shijiazhuang, China.

MeSH

AcetylationCalorimetry, Differential ScanningCelluloseCrystallizationImidazolesIonic LiquidsNanoparticlesPolyestersTemperatureThermodynamicsThermogravimetry

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

27928643

Citation

Zhao, Junchai, et al. "Effect of Polymorphs of Cellulose Nanocrystal On the Thermal Properties of Poly(lactic Acid)/cellulose Nanocrystal Composites." The European Physical Journal. E, Soft Matter, vol. 39, no. 12, 2016, p. 118.
Zhao J, Zhao Y, Wang Z, et al. Effect of polymorphs of cellulose nanocrystal on the thermal properties of poly(lactic acid)/cellulose nanocrystal composites. Eur Phys J E Soft Matter. 2016;39(12):118.
Zhao, J., Zhao, Y., Wang, Z., & Peng, Z. (2016). Effect of polymorphs of cellulose nanocrystal on the thermal properties of poly(lactic acid)/cellulose nanocrystal composites. The European Physical Journal. E, Soft Matter, 39(12), 118.
Zhao J, et al. Effect of Polymorphs of Cellulose Nanocrystal On the Thermal Properties of Poly(lactic Acid)/cellulose Nanocrystal Composites. Eur Phys J E Soft Matter. 2016;39(12):118. PubMed PMID: 27928643.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of polymorphs of cellulose nanocrystal on the thermal properties of poly(lactic acid)/cellulose nanocrystal composites. AU - Zhao,Junchai, AU - Zhao,Yujing, AU - Wang,Zhao, AU - Peng,Zheng, Y1 - 2016/12/09/ PY - 2016/07/19/received PY - 2016/11/17/accepted PY - 2016/12/9/entrez PY - 2016/12/9/pubmed PY - 2018/3/15/medline KW - Soft Matter: Polymers and Polyelectrolytes SP - 118 EP - 118 JF - The European physical journal. E, Soft matter JO - Eur Phys J E Soft Matter VL - 39 IS - 12 N2 - Cellulose nanocrystals (CNCs) with different polymorphs CNC I and II were fabricated from native and mercerized microcrystalline cellulose (MCC) by sulfuric acid hydrolysis. CNC I and II were successfully acetylated by a "green" method, which was performed in an ionic liquid of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4). X-ray diffraction (XRD) proved that the crystal structure of CNC I and II was maintained after acetylation. Transmission electron microscopy (TEM) showed the rod-like structure for acetylated CNC I and spherical crystal morphologies for acetylated CNC II. Thermogravimetric analysis (TGA) revealed that the thermal stability of CNC I and II was enhanced after acetylation. The effect of CNC polymorphs on the crystallization behavior and thermal stability of poly(lactic acid)/acetylated CNC (PLA/ACN) composites was investigated by differential scanning calorimetry (DSC) and TGA, respectively. It was found that compared to ACN I, ACN II was better able to promote the cold crystallization of PLA-based composites, and PLA/ ACN II possessed higher thermal stability. SN - 1292-895X UR - https://www.unboundmedicine.com/medline/citation/27928643/Effect_of_polymorphs_of_cellulose_nanocrystal_on_the_thermal_properties_of_poly_lactic_acid_/cellulose_nanocrystal_composites_ DB - PRIME DP - Unbound Medicine ER -