Preparation and Characterization of Poly(lactic Acid)/Ethylene Glycidyl Methacrylate Copolymer Blends

被引：0

作者：

Tsou, Chi-hui ^{[1
]}

Li, Ya-Ming ^{[2
]}

Yao, Wei-Hua ^{[3
]}

Yeh, Jen-taut ^{[1
,2
,4
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept & Grad Sch Polymer Engn, Taipei, Taiwan

[2] Hubei Univ, Fac Chem & Mat Sci, Wuhan, Peoples R China

[3] Oriental Inst Technol, Dept Mat & Textile, Pan Chiao, Taiwan

[4] Wuhan Univ Sci & Engn, Key Lab Green Proc & Funct Textile New Textile Ma, Minist Educ, Wuhan, Peoples R China

来源：

ADVANCES IN COMPOSITES, PTS 1 AND 2 | 2011年 / 150-151卷

关键词：

Poly (lactic acid); functionalized ethylene copolymers; tearing; TRIBLOCK COPOLYMERS; POLY(L-LACTIC ACID); MISCIBILITY; MORPHOLOGY;

D O I：

10.4028/www.scientific.net/AMR.150-151.139

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Both tensile and tear strength values of PLAxEGMCy blown-film specimens in machine and transverse directions improve significantly and reach the maximum values as their EGMC contents approach an optimum value of 6 wt%. The melt shear viscosity values of PLAxEGMCy resins measured at varying shear rates are significantly higher than those of the PLA resin and increase consistently with their EGMC contents. FT-IR analysis suggest that the carboxylic acid groups of PLA molecules react with the epoxy groups of EGMC molecules during the reactive-extrusion processes of PLAxEGMCy specimens. Further DMA and morphological analysis of PLA(x)EGMC(y) specimens reveal that EGMC molecules are phase-separated with PLA molecules at EGMC contents equal to or more than 2 wt%, since distinguished phase-separated EGMC droplets and tan delta transitions were found on fracture surfaces and tan delta curves of PLA(x)EGMC(y) specimens, respectively. Possible reasons accounting for the above interesting properties of the PLA/EGMC specimens are proposed in this study.

引用

页码：139 / +

页数：2

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