| 高分子量聚α-乙烯呲啶的特性粘数与分子量的关系 |
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| 引用本文： | 文承诚,宋谋道,曹秀兰,郑隽文.高分子量聚α-乙烯呲啶的特性粘数与分子量的关系[J].高分子学报,1985,0(4):306-311. |
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| 作者姓名： | 文承诚 宋谋道 曹秀兰 郑隽文 |
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| 作者单位： | 南开大学化学系，南开大学化学系，南开大学化学系，南开大学化学系 78级毕业生 |
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| 摘 要： | 在浓硫酸或稀硫酸中聚合得到了高分子量P2VP,~(13)C-NMR谱确定其为无规聚合物。特性粘数(切变速度D=0)与分子量之间的关系为η]_(D=0)=1.27×10~(-2)(?)_W~(0.70)(在DMF中,25℃,(?)_W=2.66×10~6—10.0×10~6)。在DMF中,25℃,不依赖于切变速度的最大特性粘数为260毫升·克~(-1),相应的分子量M_η=1.74×10~6左右。无扰尺寸(_0/M)=6.08×10~(-18)厘米~2·克~(-1),在DMF 中B参数为1.91×10~(-27)厘米~3。
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| 收稿时间： | 1983-07-16 |
RELATIONSHIP BETWEEN [η]_(D=0) AND M_w FOR HIGH MOLECULAR WEIGHT POLY (2-VINYLPYRIDINE) |
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| WEN Cheng-eheng,SONG Mou-dao,CAO Xiu-lan,ZHENG Jun-wen.RELATIONSHIP BETWEEN [η]_(D=0) AND M_w FOR HIGH MOLECULAR WEIGHT POLY (2-VINYLPYRIDINE)[J].Acta Polymerica Sinica,1985,0(4):306-311. |
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| Authors: | WEN Cheng-eheng SONG Mou-dao CAO Xiu-lan ZHENG Jun-wen |
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| Institution: | Department of Chemistry; Nankai University; Tianjin |
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| Abstract: | Two high molecular weight samples of poly(2-vinylpyridine) (P2VP) designated as 1 and 2 were spontaneously polymerized in diluted or concerntrated sulfuric acid. Their 13C-NMR spectra show that they are atatic polymer. Their intrinsic viscosity (shear rate D=0) molecular weight relationship has been obtained:η]D=0 = 1.27×10-2 Mw0.70(in DMF, at 25℃, Mw: 2.66 ×10s-10.0 × 10s). Their highest intrinsic viscosity (in DMF, at 25℃), which is independent of shear rate, is 260ml/g, and M is about 1.74 × 10s. The unperturbed dimension (M) of P2VP is 6.08 ×10-18cm-2g. In DMF parameter B is 1.91×10-27cm-3. |
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