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虫号: 2674059
注册: 2013-09-23
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[求助] 英文翻译成汉语，做本科毕业翻译用，要专业，麻烦了

A facile method is employed to prepare a series of LLDPE/PA6 blends with co-continuous morphology
with low PA6 content via reactive extrusion. In these blends, co-continuous morphology is obtained by
introducing graft copolymers with both high and low molecular weight trunk chains to the interface
simultaneously. Maleic anhydride functionalized polybutadine (PB-g-MAH, Mnz3000g=mol and MAH
content¼ 10 wt%) is first melt grafted onto the LLDPE backbones with dicumyl peroxide (DCP) as an
initiator. Part of PB-g-MAH is grafted onto LLDPE to form LLDPE-g-PB-g-MAH copolymer. During reactive
extrusion, in-situ formed Copolymer II (polybutadiene-graft-polyamide, PB-g-PA6) with a low molecular
weight trunk chain (PB) is obtained from the reaction between the maleic anhydride group of free or
non-grafted PB-g-MAH and the amino group on PA6 molecules; while Copolymer I (LLDPE-g-PB-g-PA6)
is obtained via the reaction between the maleic anhydride group of the grafted PB-g-MAH (i.e., LLDPE-g-
PB-g-MAH) and the amino group of PA6. Copolymer I with a high molecular weight trunk chain, LLDPE,
should strengthen the interface and favor stress transfer, enabling the deformation of PA6; and Copolymer
II (PB-g-PA6) with a low molecular weight trunk chain, PB, facilitates the formation of a flat
interface between LLDPE and PA6, thus promoting an elongated PA6 phase. Therefore, co-continuous
morphology of LLDPE/PA6 blend is successfully prepared with only 25 wt% PA6 by controlling suitable
amounts of Copolymers I and II in the blend.

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