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Ultradrawing and ultimate tensile properties of ultrahigh molecular weight polyethylene composite fibers filled with functionalized nanoalumina fillers
Author(s) -
Yeh JenTaut,
Wang ChuenKai,
Yu Wen,
Huang KuoShien
Publication year - 2015
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24105
Subject(s) - materials science , ultimate tensile strength , composite material , polyethylene , composite number , fiber , maleic anhydride , peg ratio , polymer , copolymer , finance , economics
Ultradrawing and ultimate tensile properties of ultrahigh molecular weight polyethylene (UHMWPE) composite fibers were successfully improved by the addition of nanoalumina (NAL), acid treated nanoalumina (ATNAL), and/or functionalized nanoalumina (FNAL). As evidenced by FTIR and TEM analyses, maleic anhydride grafted polyethylene (PE g‐MAH ) molecules were successfully grafted onto ATNAL fillers. The specific surface areas of FNAL fillers reached a maximal value at 516 m 2 /g, as they were modified using an optimal weight ratio of PE g‐MAH to ATNAL at 8. Achievable draw ratio ( D ra ) values of UHMWPE/NAL (F 100 A y ), UHMWPE/ATNAL (F 100 A x%‐8‐y ) and/or UHMWPE/FNAL (F 100 A x%‐8 FPE z y ) as‐prepared fibers approached a maximal value as NAL, ATNAL, and/or FNAL contents reached an optimal value at 0.1, 0.1, and 0.075 phr, respectively. The maximal D ra values of F 100 A x%‐8 FPE z 0.075 as‐prepared fiber specimens were significantly higher than those of F 100 A 0.1 and F 100 A x%‐8‐0.1 as‐prepared fiber specimens. In which, the maximal D ra values obtained for F 100 A x%‐8 FPE z 0.075 as‐prepared fibers reached another maximal value as FNAL fillers were modified using an optimal weight ratio of PE g‐MAH to ATNAL at 8. The ultimate tensile strength value of F 100 A 2%‐8 FPE 8 0.075 drawn fiber reached 6.4 GPa, which was about 2.4 times of that of the UHMWPE drawn fibers prepared at the same optimal UHMWPE concentration and drawing condition. POLYM. ENG. SCI., 55:2205–2214, 2015. © 2015 Society of Plastics Engineers