Preparation and characterization of thermoplastic starches and their blends with poly(lactic acid)

被引：49
作者：
Yang, Yong [1 ]
Tang, Zhaobin [1 ]
Xiong, Zhu [1 ]
Zhu, Jin [1 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo Key Lab Polymer Mat, Ningbo 315201, Zhejiang, Peoples R China
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2015年 / 77卷
关键词：
Poly(lactic acid); Thermoplastic starch; Hydrophobic modification; MECHANICAL-PROPERTIES; GLYCEROL; WATER; PLASTICIZATION; POLYMERIZATION; EXTRUSION; MIXTURES; BEHAVIOR;
D O I：
10.1016/j.ijbiomac.2015.03.053
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Two different thermoplastic starches (TPS), namely maleic anhydride grafted starch (MA-g-starch) and epoxidized cardanol grafted starch (Epicard-g-starch), were successfully prepared by chemical modification without the addition of any plasticizer. The structure and properties were characterized by nuclear magnetic resonance (NMR), X-ray diffraction (XRD), hot press testing, scanning electron microscopy (SEM) and contact angle meter, respectively. Results from XRD showed that the highly crystalline structure of native starch was destroyed after modification. Continuous phase was obtained from both of the chemically modified starches after hot pressing at 130 degrees C, indicating that they have good thermoplasticity. Subsequently, they were melt-blended with PLA. It was found that the Epicard-g-starch had a much finer dispersed phase size than MA-g-starch in PLA matrix due to its better hydrophobicity. As a result, the mechanical properties of PLA/Epicard-g-starch blend were superior to those of PLA/MA-g-starch blend. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：273 / 279
页数：7
相关论文
共 36 条
[1]   Biocomposites based on plasticized starch: thermal and mechanical behaviours [J].
Averous, L ;
Boquillon, N .
CARBOHYDRATE POLYMERS, 2004, 56 (02) :111-122
[2]   Structural studies of starches with different water contents [J].
Bogracheva, TY ;
Wang, YL ;
Wang, TL ;
Hedley, CL .
BIOPOLYMERS, 2002, 64 (05) :268-281
[3]   Isothermal crystallization kinetics of thermoplastic starch/poly(lactic acid) composites [J].
Cai, Jie ;
Liu, Miao ;
Wang, Li ;
Yao, Kunhua ;
Li, Sha ;
Xiong, Hanguo .
CARBOHYDRATE POLYMERS, 2011, 86 (02) :941-947
[4]  
Chanakom Y., 2011, CARBOHYD POLYM, V83, P22
[5]   The preparation and characterisation of a series of chemically modified potato starches [J].
Fang, JM ;
Fowler, PA ;
Tomkinson, J ;
Hill, CAS .
CARBOHYDRATE POLYMERS, 2002, 47 (03) :245-252
[6]   Extrusion of pectin/starch blends plasticized with glycerol [J].
Fishman, ML ;
Coffin, DR ;
Konstance, RP ;
Onwulata, CI .
CARBOHYDRATE POLYMERS, 2000, 41 (04) :317-325
[7]   Phase and glass transition behaviour of concentrated barley starch-glycerol-water mixtures, a model for thermoplastic starch [J].
Forssell, PM ;
Mikkila, JM ;
Moates, GK ;
Parker, R .
CARBOHYDRATE POLYMERS, 1997, 34 (04) :275-282
[8]   In situ polymerization of starch with lactic acid in aqueous solution and the microstructure characterization [J].
Gong, Qingxia ;
Wang, Li-Qun ;
Tu, Kehua .
CARBOHYDRATE POLYMERS, 2006, 64 (04) :501-509
[9]  
Gong QX, 2006, ACTA POLYM SIN, P1045
[10]   Structure and properties of highly toughened biodegradable polylactide/ZnO biocomposite films [J].
Jayaramudu, J. ;
Das, Kunal ;
Sonakshi, M. ;
Reddy, G. Siva Mohan ;
Aderibigbe, B. ;
Sadiku, Rotimi ;
Ray, Suprakas Sinha .
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 2014, 64 :428-434
1234