英语翻译Result and discussionThe results obtained from solvent extraction of nylon6 subjected to 5 MeV electrons indicated that noinsoluble gel is formed upon irradiation up to dose of150 kGy.However,melt flow index decreased signifi-cantly as a

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英语翻译Result and discussionThe results obtained from solvent extraction of nylon6 subjected to 5 MeV electrons indicated that noinsoluble gel is formed upon irradiation up to dose of150 kGy.However,melt flow index decreased signifi-cantly as a
英语翻译
Result and discussion
The results obtained from solvent extraction of nylon
6 subjected to 5 MeV electrons indicated that no
insoluble gel is formed upon irradiation up to dose of
150 kGy.However,melt flow index decreased signifi-
cantly as a function of absorbed dose (Fig.1),suggesting
increase of the melt viscosity of the nylon and
correspondingly its molecular weight.
This result was also supported by molecular weight
measurements.Viscosity average molecular weight,Mv,
was determined by the MarkeHouwink equation [14]:
½h?ZkMa
v
where a and k are characteristic constants for a given
polymer/solvent/temperature system and h is intrinsic
viscosity.For nylon 6/formic acid/25?C system the
constants a and k are 0.94 and 0.463 10?5l/min,
respectively [13].The molecular weight of the irradiated
nylon 6 increased steadily with increasing absorbed
doses up to 150 kGy (Fig.2),which suggests formation
of chain branching in the nylon samples upon EB-
irradiation.Similar results have been reported on the
gamma-irradiated polyamide 6 for the irradiation dose
of 400 kGy [15].

英语翻译Result and discussionThe results obtained from solvent extraction of nylon6 subjected to 5 MeV electrons indicated that noinsoluble gel is formed upon irradiation up to dose of150 kGy.However,melt flow index decreased signifi-cantly as a
结果与讨论
从尼龙溶剂提取得到的结果
6进行5 MeV电子表示,没有
不溶性凝胶照射时的剂量形成
150 kGy.然而,熔体流动指数明显下降—
城市作为吸收剂量的函数（图1）,提示
熔体的粘度和增加尼龙
相对分子量.
这一结果也支持通过分子量
测量.粘均分子量,MV,
被markehouwink方程【14】确定：
½H?zkma
V
其中,K是一个给定的特性常数
聚合物/溶剂/温度制度和H是内在的
粘度.尼龙6 /甲酸/ 25?C系统
常数A和K分别为0.94和0.463!10?5L／min,
分别为[ 13 ].的照射的分子量
随着吸收的尼龙6稳步上升
剂量为150 kGy的（图2）,这表明形成
链分支在尼龙样品在电子束—
照射.类似的结果已报告了
γ辐照聚酰胺6的照射剂
400 kGy [ 15 ].

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