Anomalous rheological behavior of long glass fiber reinforced polypropylene
- Authors
- Kim, Dong Hak; Lee, Young Sil; Son, Younggon
- Issue Date
- Dec-2012
- Publisher
- 한국유변학회
- Keywords
- long glass fiber reinforced thermoplastic; polypropylene; abnormal rheological behavior
- Citation
- The Korea-Australia Rheology Journal, v.24, no.4, pp 307 - 312
- Pages
- 6
- Journal Title
- The Korea-Australia Rheology Journal
- Volume
- 24
- Number
- 4
- Start Page
- 307
- End Page
- 312
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/14656
- DOI
- 10.1007/s13367-012-0037-7
- ISSN
- 1226-119X
2093-7660
- Abstract
- Dynamic rheological properties of PP-based long glass fiber-reinforced thermoplastics (LFT) were investigated. Weight fractions of the glass fibers investigated in the present study ranged from 0.15 to 0.5, which are higher than those of previous studies. We observed very abnormal rheological behavior. Complex viscosity (eta*) of the LFT increased with the glass fiber content up to 40 wt. %. However, the eta* with a weight fraction of 0.5 is observed to be lower than that of LFT with a weight fraction of 0.4 in spite of higher glass fiber content. From various experiments, we found that this abnormal behavior is analogous to the rheological behavior of a lyotropic liquid crystalline polymer solution and concluded that the abnormal rheological behavior for the LFT is attributed to the formation of a liquid crystal- like structure at high concentrations of long glass fibers.
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