Preparation and characterization of novel ultra‐high molecular weight polyethylene composite fibers filled with nanosilica particles. Issue 4 (3rd August 2012)

• Record Type: Journal Article
• Authors: Yeh, Jen‐Taut; Wang, Chuen‐Kai; Yeh, Alice; Huang, Lu‐Kai; Wang, Wen‐Hung; Hsieh, Kuo‐Huang; Huang, Chi‐Yuan; Chen, Kan‐Nan
• Is Part Of: Polymer international. Volume 62:Issue 4(2013:Apr.)
• Page Start: 591
• Page End: 600
• Publication Date: 2012-08-03
• Subjects: ultradrawing -- nanosilica -- ultrahigh molecular weight polyethylene; Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.7
• DOI: 10.1002/pi.4316
• Languages: English
• ISSNs: 0959-8103

Abstract

Abstract: Ultrahigh molecular weight polyethylene (UHMWPE)/nanosilica (F2 S y ) and UHMWPE/modified nanosilica (F2 S mx ‐ y ) as‐prepared fibers were prepared by spinning of F2 S y and F2 S mx ‐ y gel solutions, respectively. Modified nanosilica particles were prepared by grafting maleic anhydride grafted polyethylenes onto nanosilica particles. The achievable draw ratios ( D ra ) of F2 S y and F2 S mx ‐ y as‐prepared fibers approached a maximal value as the original and modified nanosilica contents reached corresponding optimum values; the maximal D ra value obtained for F2 S mx ‐ y as‐prepared fiber specimens was significantly higher than that of the F2 S y as‐prepared fiber specimens prepared at the optimum nanosilica content. The melting temperature and evaluated lamellar thickness values of F2 S y and F2 S mx ‐ y as‐prepared fiber series specimens decrease, but crystallinity values increase significantly, as their original and modified nanosilica contents respectively increase. Similar to the achievable drawing properties of the as‐prepared fibers, the orientation factor, tensile strength (σf ) and initial modulus ( E ) values of both drawn F2 S y and F2 S mx ‐ y fiber series specimens with a fixed draw ratio reach a maximal value as the original and/or modified nanosilica contents approach the optimum values; the σf and E values of the drawn F2 S mx ‐ y fiber specimens are significantly higher than those of the corresponding drawn F2 S y fiber specimens prepared at the same draw ratios and nanosilica contents but without being modified. To understand the interesting ultradrawing, thermal, orientation and tensile properties of F2 S y and F2 S mx ‐ y fiber specimens, Fourier transform infrared, specific surface area and transmission electron microscopy analyses of the original and modified nanosilica were performed in this study. © 2012 Society of Chemical Industry Abstract : To understand the interesting ultradrawing, thermal, orientation and tensile properties of F2 S y and F2 Smx‐y fiber specimens, Fourier transform infra‐red, specific surface areas, and transmission electron microcopic analyses of the original and modified nanosilica were performed in this study.