Preparation and Properties of Monoepoxy Compound-grafted Polyamide 6

doi:10.19491/j.issn.1001-9278.2019.06.001

China Plastics ›› 2019, Vol. 33 ›› Issue (6): 1-7.DOI: 10.19491/j.issn.1001-9278.2019.06.001

Received:2019-02-15 Revised:2019-03-25 Online:2019-06-26 Published:2019-07-26

Abstract

Abstract: Polyamide 6 (PA6) was grafted with a monoepoxy compound, glycidyl neodecanoate (GND), through reactive extrusion. The molecular structure of grafted PA6 was characterized by infrared spectroscopy, and its crystalline, rheological and mechanical properties were also investigated. The results indicated that GND could well react with PA6 to form branched PA6 copolymers. The branched chains reduced the crystallization rate and crystallinity degree of PA6, resulting in a change in the mechanical properties of grafted PA6 accordingly. The optimum dosage of GND was found to be in the range of 1~3 phr. There was a decrease in tensile strength by 8 % when 1 phr of GND was grafted into PA6. On the other hand, the elongation at break and notched impact strength increased by 161 % and 35 % compared to those of pure PA6, respectively.

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