Effect of fiber morphology on rheological properties of plant fiber reinforced poly(butylene succinate) composites

被引:55
作者
Feng Yan-Hong [1 ]
Li Yi-Jie [1 ]
Xu Bai-Ping [2 ]
Zhang Da-Wei [1 ]
Qu Jin-Ping [1 ]
He He-Zhi [1 ]
机构
[1] S China Univ Technol, Minist Educ, Key Lab Polymer Proc Engn, Natl Engn Res Ctr Novel Equipment Polymer Proc, Guangzhou 510641, Guangdong, Peoples R China
[2] Guangdong Ind Technol Coll, Technol Dev Ctr Polymer Proc Engn, Guangzhou 510300, Guangdong, Peoples R China
关键词
Polymer-matrix composites; Fibers; Rheological properties; Torque rheometer; POLYMER MELTS; FLOW; SUSPENSIONS; PARAMETERS; BEHAVIOR; LENGTH; FILLER;
D O I
10.1016/j.compositesb.2012.05.051
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Sisal fibers (SFs), steam exploded sisal fibers (SESFs) and steam exploded bagasse fibers (SEBFs) which have different fiber morphologies, were mixed with poly(butylene succinate) (PBS) using a torque rheometer. The rheological properties of these plant fiber-reinforced PBS composites were evaluated. Results show that the fiber morphology has a large effect on rheological behavior. At the same fiber content (e.g., 10 wt% and 30 wt%), the non-Newtonian index n of composites reinforced by flexible fibers with a higher aspect ratio and larger contact area with the matrix is smaller. In general, n decreases with increasing fiber content but when the fiber content is too high (e.g., 50 wt%), the aggregation of fibers is too extensive so that the actual contact area between fibers and matrix becomes much lower, n increase instead. At the same fiber content (e.g., 10 wt% and 30 wt%), the consistency indices of fibrous filler-reinforced composites are larger than those of powder-filled composites; the larger the actual contact area between the matrix and the fibers, the greater the consistency index of the composite. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:193 / 199
页数:7
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