Preparation and Characterization of Thermoplastic Starch and Its Application in Polylactide Composite

被引：0
|
作者：
Li P. [1 ,2 ]
Shao N. [1 ]
Lu D. [1 ]
Lu G. [1 ]
Tang Z. [1 ]
机构：
[1] Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo
[2] Shantou Samma Plastic Industry Co., Ltd, Shantou
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2022年 / 38卷 / 06期
关键词：
Compatibility; Composite; Grafting modification; Hydrophobicity; Thermoplastic starch;
D O I：
10.16865/j.cnki.1000-7555.2022.0113
中图分类号：
学科分类号：
摘要：
A thermoplastic starch was achieved by the grafting modification of furfuryl glycidyl ether (FGE). The FT-IR and 1H-NMR analyses demonstrate that the furan rings are successfully grafted onto starch molecules through the bridging effect of maleic anhydride. XRD results show that the crystal structures of starch are effectively destroyed by the grafting modification of FGE, then endowing starch with excellent thermoplastic processing properties. In addition, the FGE-grafted starch (FGE-g-St) displays extremely excellent hydrophobicity, which is demonstrated that the contact angle is increased from about 30° for native starch (N-St) to about 65°. This results in the significantly improved interface compatibility between FGE-g-St and polylactide (PLA), reflected by the almost detectable phase interface in the PLA/FGE-g-St composite. Compared with the PLA/N-St composite, the tensile strength, flexural strength and elongation at break of the PLA/FGE- g- St composite are increased comprehensively, which is attributed to the significantly improved interface compatibility. © 2022, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：56 / 62
页数：6
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