Blends of PBT with rigid thermotropic LCP having flexible side groups: Comparison of their tensile properties with semirigid main-chain TLCP blends
✍ Scribed by Jin-Hae Chang; Byung-Wook Jo
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 837 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
TWO new thermotropic liquid crystalline polymers (LCPs) were synthesized. One is a dimesogenic LCP having a flexible hexamethylene spacer in the main chain, the other is a rigid-type main-chain LCP having alkoxy side groups on the terephthaloyl moiety of the polymer. Blends of LCP with poly(buty1ene) terephthalate were melt-spun a t different LCP contents and different draw ratios to produce a monofilament. Maximum enhancement in the ultimate tensile strength was observed for the blends containing 5% LCP at any draw ratio, and decreased with further increase in LCP content. The initial modulus monotonically increased with increasing LCP content. The tensile properties of the rigid-type LCP blends were higher than those of the flexible main-chain LCP blends.