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用~(13)C-NMR 方法测定了高密度聚乙烯(HDPF)的支化度和链结构。用 Lindeman-Adams(LA)参数计算了化学位移,参考计算值,对实测到的峰进行了归属。利用最小二乘法和观察平均法对支链大于1/10000个碳的各类支化链的长度、含量作了定量计算。
The degree of branching and chain structure of high density polyethylene (HDPF) were measured by ~ (13) C-NMR. The chemical shifts were calculated using Lindeman-Adams (LA) parameters. The calculated peaks were assigned to the measured peaks. The length and content of various kinds of branched chains with branches greater than 1/10000 carbon were calculated by least square method and observation average method.