EFFECT OF SOME ADDITIVES ON PROCESSBILITY, MECHANICAL PROPERTIES AND MORPHOLOGY OF POLYOXYMETHYLENE/SILICA NANOCOMPOSITES

Authors

  • Chinh Thuy Nguyen Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi https://orcid.org/0000-0001-8016-3835
  • Hoang Thai Institute for Tropical Technology, Vietnam Academy of Science and Technology 18, Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam
  • Mai Thi Tran Institute for Tropical Technology, Vietnam Academy of Science and Technology 18, Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam

DOI:

https://doi.org/10.15625/2525-2518/56/3B/12711

Keywords:

polyoxymethylene, nanosilica, processibility, additives, mechanical property

Abstract

Using additives for polyoxymethylene/silica (POM/SiO2) nanocomposite system is one of suitable solutions to improve processbility, mechanical properties, especially, elongation at break of the material. In this paper, the effect of some additives on the processbility, mechanical properties and morphology of polyoxymethylene/silica (POM/SiO2) nanocomposite was investigated. Zinc stearate (under the commercial name ultraflow – UTF), ethylene-vinyl acetate copolymer (EVA), linear low density polyethylene (LLDPE) and polylactic acid grafted 5 wt.% of polyethylene glycol (PELA) were used as additives for the nanocomposites. The obtained results showed that the preparing process of the POM/SiO2 nanocomposite becam more easily in the presence of PELA, UTF and EVA, corresponding to a lower torque and mixing energy. The PELA caused decrease in the E-modulus or hardness and increase in elongation at break as well as tensile strength of the POM/SiO2 nanocomposites. The SEM images showed that POM and  nanosilica were less compatible in the  nanocomposite using EVA, LLDPE and UTF and they were more compatible with using PELA.

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Author Biography

Chinh Thuy Nguyen, Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi

ThS. Nguyễn Thúy Chinh

Phòng Hóa lý vật liệu phi kim loại (phòng 2)

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Published

2018-09-13

Issue

Section

3rd Intern Workshop CPM2018