Surfactant Effects on Structure and Mechanical Properties of Ultrahigh-Molecular-Weight Polyethylene/Layered Silicate Composites.

Autor: Nikiforov LA; Department of Chemistry, North-Eastern Federal University, Yakutsk 677000, Russia. nikiforov_l@outlook.com., Okhlopkova TA; Department of Chemistry, North-Eastern Federal University, Yakutsk 677000, Russia. botanya05@mail.ru., Kapitonova IV; Department of Chemistry, North-Eastern Federal University, Yakutsk 677000, Russia. Kirillinaiuliia@gmail.com., Sleptsova SA; Department of Chemistry, North-Eastern Federal University, Yakutsk 677000, Russia. ssard@yandex.ru., Okhlopkova AA; Department of Chemistry, North-Eastern Federal University, Yakutsk 677000, Russia. okhlopkova@yandex.ru., Shim EL; School of Mechanical & Automotive Engineering, Halla University, Wonju 220-712, Korea. elshim@halla.ac.kr., Cho JH; Department of Chemistry, North-Eastern Federal University, Yakutsk 677000, Russia. jinhcho@mju.ac.kr.; Department of Chemistry, Myongji University, Yongin 449-728, Korea. jinhcho@mju.ac.kr.
Jazyk: angličtina
Zdroj: Molecules (Basel, Switzerland) [Molecules] 2017 Dec 05; Vol. 22 (12). Date of Electronic Publication: 2017 Dec 05.
DOI: 10.3390/molecules22122149
Abstrakt: In this study, the reinforcement of ultrahigh-molecular-weight polyethylene (UHMWPE) with biotite was investigated. The biotite filler was mechanically activated with different dry surfactants to improve its compatibility with UHMWPE and decrease agglomeration among biotite particles. Alkyldimethylbenzylammonium chloride (ADBAC) and cetyltrimethylammonium bromide (CTAB) were selected as cationic surfactants. The tensile strength of composites containing 1 wt % of CTAB-treated biotite was increased by 30% relative to those with untreated biotite, but was unchanged with ADBAC treatment of the same biotite content. The stereochemistry of the surfactant may be critical to the composite structure and mechanical properties of the material. The stereochemistry of CTAB was preferable to that of ADBAC in enhancing mechanical properties because the stereochemistry of ADBAC impedes favorable interactions with the biotite surface during mechanical activation.
Competing Interests: The authors declare no conflict of interest.
Databáze: MEDLINE
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