Biodegradation of Thermoplastic Starch and its Blends with Poly(lactic acid) and Polyethylene: Influence of Morphology

被引：27
|
作者：
Li, Gang [1 ]
Sarazin, Pierre [1 ]
Orts, William J. [2 ]
Imam, Syed H. [2 ]
Favis, Basil D. [1 ]
机构：
[1] Ecole Polytech Montreal, CREPEC, Dept Chem Engn, Montreal, PQ H3C 3A7, Canada
[2] ARS, USDA, Western Reg Res Ctr, Albany, CA 94710 USA
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2011年 / 212卷 / 11期
关键词：
biodegradation; morphology; polyethylene; poly(lactic acid); thermoplastic starch; DEGRADATION; INVERSION;
D O I：
10.1002/macp.201100090
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The room temperature mineralization of thermoplastic starch (TPS) with a high glycerol content and its blends with low-density polyethylene (LDPE) and polylactic acid (PLA) are examined under controlled degradation conditions. These results are correlated with the morphologies and continuity behavior of the various blend systems. It is found that thermoplastic starch degrades more rapidly than native starch. Lowering the glycerol content in the TPS has virtually no effect on its biodegradation behavior. The only contribution to biodegradation of the TPS blend is from the TPS component. Blending TPS with LDPE and PLA in a co-continuous morphology at a 50/50 composition provides a significant increase in TPS surface area, which increases the biodegradation rate for the blends as compared to pure TPS. The results indicate a close relationship between morphology, phase continuity, and biodegradation behavior.
引用
收藏
页码：1147 / 1154
页数：8
相关论文
共 50 条
  • [41] Starch, Poly(lactic acid), and Poly(vinyl alcohol) Blends
    Tianyi Ke
    Xiuzhi S. Sun
    Journal of Polymers and the Environment, 2003, 11 : 7 - 14
  • [42] The morphology, rheological, and mechanical properties of wood flour/starch/poly(lactic acid) blends
    Lv, Shanshan
    Gu, Jiyou
    Tan, Haiyan
    Zhang, Yanhua
    JOURNAL OF APPLIED POLYMER SCIENCE, 2017, 134 (16)
  • [43] Thermal degradation and physical aging of poly(lactic acid) and its blends with starch
    Acioli-Moura, Ricardo
    Sun, Xiuzhi Susan
    POLYMER ENGINEERING AND SCIENCE, 2008, 48 (04): : 829 - 836
  • [44] Biodegradable polymer blends of poly(lactic acid) and starch
    Park, JW
    Lee, DJ
    Yoo, ES
    Im, SS
    Kim, SH
    Kim, YH
    KOREA POLYMER JOURNAL, 1999, 7 (02): : 93 - 101
  • [45] Compostability and Ecotoxicity of Poly(lactic acid) and Starch Blends
    Rudeekit, Y.
    Siriyota, P.
    Intaraksa, P.
    Chaiwutthinan, P.
    Tajan, M.
    Leejarkpai, T.
    BIOMATERIALS AND APPLICATIONS, 2012, 506 : 323 - 326
  • [46] Morphology and Mechanical Properties of Itaconic Anhydride Grafted Poly(lactic acid) and Thermoplastic Protein Blends
    Walallavita, A. S.
    Verbeek, C. J. R.
    Lay, M. C.
    INTERNATIONAL POLYMER PROCESSING, 2018, 33 (02) : 153 - 163
  • [47] MECHANICAL PROPERTIES, MORPHOLOGY, AND HYDROLYTIC DEGRADATION BEHAVIOR OF POLY LACTIC ACID/THERMOPLASTIC POLYURETHANE BLENDS
    Buys, Yose Fachmi
    Ahmad, Mimi Syakina
    Anuar, Hazleen
    Mahmud, Mudrikah Sofia
    Nasir, Nur Aimi Mohd
    IIUM ENGINEERING JOURNAL, 2020, 21 (01): : 193 - 201
  • [48] The influence of citric acid on the properties of thermoplastic starch/linear low-density polyethylene blends
    Wang Ning
    Yu Jiugao
    Ma Xiaofei
    Wu Ying
    CARBOHYDRATE POLYMERS, 2007, 67 (03) : 446 - 453
  • [49] TRANSESTERIFICATION BETWEEN POLY(LACTIC ACID) AND POLYCARBONATE UNDER FLOW FIELD AND ITS INFLUENCE ON MORPHOLOGY OF THE BLENDS
    Liu, Chun-yan
    Zhou, Chi-xing
    Yu, Wei
    ACTA POLYMERICA SINICA, 2012, (11): : 1225 - 1233
  • [50] Toughened poly(lactic acid)/thermoplastic polyurethane uncompatibilized blends
    Rodolfo, Mateus Garcia
    Costa, Lidiane Cristina
    Marini, Juliano
    JOURNAL OF POLYMER ENGINEERING, 2022, 42 (03) : 214 - 222
12345