Poly(lactic acid)/lignin blends prepared with the Pickering emulsion template method

被引:61
作者
Li, Xiang [1 ]
Hegyesi, Nora [2 ,3 ]
Zhang, Yunchong [1 ]
Mao, Zhiping [1 ]
Feng, Xueling [1 ]
Wang, Bijia [1 ]
Pukanszky, Bela [2 ,3 ]
Sui, Xiaofeng [1 ]
机构
[1] Donghua Univ, Coll Chem Chem Engn & Biotechnol, Key Lab Sci & Technol Ecotext, Minist Educ, Shanghai 201620, Peoples R China
[2] Hungarian Acad Sci, Inst Mat & Environm Chem, Res Ctr Nat Sci, POB 286, H-1519 Budapest, Hungary
[3] Budapest Univ Technol & Econ, Dept Phys Chem & Mat Sci, Lab Plast & Rubber Technol, POB 91, H-1521 Budapest, Hungary
关键词
Lignin nanoparticles; Decomposition temperature; Reinforcement; Rheology; KRAFT LIGNIN; DEGRADATION BEHAVIOR; FUNCTIONAL MATERIALS; POLYMER BLENDS; PLA-LIGNIN; COMPOSITES; VALORIZATION; DERIVATIVES; CONVERSION; FILLER;
D O I
10.1016/j.eurpolymj.2018.12.001
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
In this work, the Pickering emulsion template method was used to introduce lignin nanoparticles into poly(lactic acid) (PLA) with improved dispersion. The effect of lignin as the stabilizer of Pickering emulsions was studied in this paper, including the thermal, rheological and mechanical properties of the blends. The PLA/lignin films had reduced light transmission in the UV light region, and Young's modulus of PLA/lignin blends increased, while their tensile strength and elongation-at-break decreased as compared to neat PLA film. The introduction of lignin improved crystallinity of PLA from 7.5% to over 15%, and increased its decomposition temperature by about 10 degrees C. The lignin in the blends prepared using the Pickering emulsion template approach had much larger load bearing capacity than the dispersed lignin particles in the usual melt blended material. All the results indicated that the Pickering emulsion template method improves the dispersion of lignin (over 5.0 wt%) in PLA and improves UV protection, crystallinity, decomposition temperature and Young's modulus of PLA.
引用
收藏
页码:378 / 384
页数:7
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