MODIFICATION OF POLYAMIDE 6 WITH POLYAMINOAMIDE-g-POLY(ETHYLENE GLYCOL) VIA HYDROLYTIC POLYMERIZATION

Yao-chi Liu a; b; Wei Xu a; Yuan-qin Xiong a; Fan Zhang a

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MODIFICATION OF POLYAMIDE 6 WITH POLYAMINOAMIDE-g-POLY(ETHYLENE GLYCOL) VIA HYDROLYTIC POLYMERIZATION

Papers | Updated：2021-06-21

- MODIFICATION OF POLYAMIDE 6 WITH POLYAMINOAMIDE-g-POLY(ETHYLENE GLYCOL) VIA HYDROLYTIC POLYMERIZATION
- Vol. 27, Issue 3, Pages: 343-350(2009)
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- Published：20 May 2009
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Yao-chi Liu a, b, Wei Xu a, et al. MODIFICATION OF POLYAMIDE 6 WITH POLYAMINOAMIDE-g-POLY(ETHYLENE GLYCOL) VIA HYDROLYTIC POLYMERIZATION[J]. 2009, 27(3): 343-350.
DOI：

Yao-chi Liu a, b, Wei Xu a, et al. MODIFICATION OF POLYAMIDE 6 WITH POLYAMINOAMIDE-g-POLY(ETHYLENE GLYCOL) VIA HYDROLYTIC POLYMERIZATION[J]. 2009, 27(3): 343-350. DOI：

摘要

To enhance the impact strength of polyamide 6

hydrolytic polymerization modification by the polyaminoamide-g-poly(ethylene glycol) (PAAEG) derivatives with poly(ethylene glycol) (PEG) molecular weight of 400-010000 was studied. Amide groups of polyaminoamide segments were postulated to form hydrogen bonding with polyamide 6

and hydroxy groups of PAAEG units were expected to react with carboxylic acid groups of polyamide 6 forming copolymers during the polymerization. The improved compatibility in amorphous regions of blends has been confirmed by differential scanning calorimetry (DSC) and scanning electron microscopy (SEM) of fracture surfaces. The effects of PAAEG on the water absorption and notch sensitivity of blends were investigated

using water uptake measurement and mechanical testings

respectively. For comparison

pure polyamide 6 and the blend of PEG/polyamide 6 were also investigated. The addition of PAAEG retarded the crystallization of polyamide 6

but did not make remarkable influences on its crystalline structure. As a consequence of the strong interactions between the dispersed phases and polyamide 6 matrices

PAAEG was a more suitable additive for improving the notched impact strength of polyamide 6 than PEG.

Abstract

To enhance the impact strength of polyamide 6

using water uptake measurement and mechanical testings

respectively. For comparison

pure polyamide 6 and the blend of PEG/polyamide 6 were also investigated. The addition of PAAEG retarded the crystallization of polyamide 6

but did not make remarkable influences on its crystalline structure. As a consequence of the strong interactions between the dispersed phases and polyamide 6 matrices

PAAEG was a more suitable additive for improving the notched impact strength of polyamide 6 than PEG.

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