High Strength Metallocene Catalyst-Synthesized Polypropylene Fibers with High Stereoregularity and High Molecular Weight
Source abstract
Abstract
High stereoregularity isotactic polypropylene (iPP) can now be synthesized even using metallocene catalysts. Fibers with higher tensile strength than those of Ziegler-Natta catalyst-synthesized iPP have been reported for iPP with 20 g/10 min melt index. The aim of this study is to further increase the tensile strength using 4 g/10 min melt index iPP. Metallocene iPP fibers with higher tensile strength, higher initial modulus,and lower creep strain at 125 ̊C than Ziegler-Natta iPP fibers were also obtained using 4 g/10 min melt index iPP. Moreover, the obtained maximum tensile strength of 1.39 N/tex (1.3 GPa) was higher than that of 20 g/10 min melt index iPP. The metallocene iPP fibers also had smaller crack diameters estimated by ultra-small angle X-ray scattering.
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Research context
OpenAlex topics: Polymer crystallization and properties · biodegradable polymer synthesis and properties · Fiber-reinforced polymer composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Textile Science and Technology, Shinshu University
Institute for Fiber Engineering, Shinshu University
Prime Polymer Co., Ltd./Mitsui Chemicals Inc.,
References (24)
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