Effect of Reinforcement Orientation on the Mechanical Properties of Microfibrillar PP/PET and PET Single-Polymer Composites

被引：28
作者：
McCardle, Ryan [1 ]
Bhattacharyya, Debes [1 ]
Fakirov, Stoyko [1 ]
机构：
[1] Univ Auckland, Ctr Adv Composite Mat, Auckland 1142, New Zealand
来源：
MACROMOLECULAR MATERIALS AND ENGINEERING | 2012年 / 297卷 / 07期
关键词：
mechanical properties; microfibrils; nanocomposites; polymer; polymer composites; single-polymer composites; ALL-PP COMPOSITES; COEXTRUDED POLYPROPYLENE TAPES; HOT COMPACTION; POLYETHYLENE FIBERS; IMPACT PERFORMANCE; FLEXURAL CREEP; STRAIN-RATE; MORPHOLOGY; BEHAVIOR; MODULUS;
D O I：
10.1002/mame.201100220
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In situ PET microfibrils are created by drawing melt-blended PP and PET. The drawn blend is used to prepare polymer/polymer MFCs, and isolated PET microfibrils are used for the manufacturing of MF-SPCs. Samples are prepared with different fibril orientations to determine the effect of orientation on the mechanical properties of the two types of composites. The resulting composites show improvements in stiffness of 77% for uniaxial MFCs, and 125% for uniaxial MF-SPCs, with the highest recorded modulus of 8.57?GPa for a uniaxial MF-SPC sample. SEM observations confirm that the fibrillar structure and excellent alignment is maintained. The changes in the reinforcement effect with orientation are very similar to those predicted by the rule of mixtures for the crossply.
引用
收藏
页码：711 / 723
页数：13
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