| SUBSTITUENT CHEMICAL SHIFT (SCS) AND THE SEQUENCE STRUCTURE OF ETHYLENE-VINYL ALCOHOL COPOLYMERS |
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| 引用本文： | 周子南,田文晶,吴盛容,戴莹琨,冯之榴,沈联芳,袁汉珍. SUBSTITUENT CHEMICAL SHIFT (SCS) AND THE SEQUENCE STRUCTURE OF ETHYLENE-VINYL ALCOHOL COPOLYMERS[J]. 高分子科学, 1992, 0(4): 299-303 |
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| 作者姓名： | 周子南 田文晶 吴盛容 戴莹琨 冯之榴 沈联芳 袁汉珍 |
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| 作者单位： | Laboratory of Polymer Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Laboratory of Polymer Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Laboratory of Polymer Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Laboratory of Polymer Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Laboratory of Polymer Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，Wuhan Institute of Physics，Academia Sinica，Wuhan 430071，Wuhan Institute of Physics，Academia Sinica，Wuhan 430071 |
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| 摘 要： | Three ethylene-vinyl alcohol copolymers were studied by means of the substituent chemical shift (SCS) method. The SCS parameters of hydroxy (-OH) in two different solvents were obtained: in deuterium oxide/phenol (20/80 W/W ) the parameters are S_1 = 42.77±0.08ppm, S_2 = 7.15±0.06 ppm, S_3 (s)= -4.08±0.02ppm, S_3 (t) =-3.09±0.20ppm,S_4 = 0.48±0.03ppm, S_5 = 0.26±0.05ppm. In o-dichloro-benzen-d_4 S_1(s)=44.79±0.61ppm, S_2=7.40±0.00ppm, S_3(s)=-4.51±0.17ppm, S_3(t)=-3.13 ±0.00 ppm, S_4 =0.63±0.04ppm, S_5=0.36±0.00ppm.Simultaneously the ~(13)CNMR spectra of EVA copolymers were assigned by using the SCS parameters obtained.
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| 关 键 词： | Ethylene-α-olefine copolymers Sequence structure Substituent chemical shift (SCS) ~(13)C NMR. |
| 收稿时间： | 1991-05-25 |
SUBSTITUENT CHEMICAL SHIFT (SCS) AND THE SEQUENCE STRUCTURE OF ETHYLENE-VINYL ALCOHOL COPOLYMERS |
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| ZHOU Zinan,TIAN Wenjing,WU Shengrong,DAI Yingkun,FENG Zhiliu,SHEN Lianfang,YUAN Hanzhen. SUBSTITUENT CHEMICAL SHIFT (SCS) AND THE SEQUENCE STRUCTURE OF ETHYLENE-VINYL ALCOHOL COPOLYMERS[J]. Chinese Journal of Polymer Science, 1992, 0(4): 299-303 |
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| Authors: | ZHOU Zinan TIAN Wenjing WU Shengrong DAI Yingkun FENG Zhiliu SHEN Lianfang YUAN Hanzhen |
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| Affiliation: | Laboratory of Polymer Physics; Changchun Institute of Applied Chemistry; Academia Sinica; Changchun; Wuhan Institute of Physics; Wuhan |
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| Abstract: | Three ethylene-vinyl alcohol copolymers were studied by means of the substituent chemical shift (SCS) method. The SCS parameters of hydroxy (-OH) in two different solvents were obtained: in deuterium oxide/phenol (20/80 W/W ) the parameters are S1 = 42.77±0.08ppm, S2 = 7.15±0.06 ppm, S3 (s)= -4.08±0.02ppm, S3 (t) =-3.09±0.20ppm,S4 = 0.48±0.03ppm, S5 = 0.26±0.05ppm. In o-dichloro-benzen-d4 S1(s)=44.79±0.61ppm, S2=7.40±0.00ppm, S3(s)=-4.51±0.17ppm, S3(t)=-3.13 ±0.00 ppm, S4 =0.63±0.04ppm, S5=0.36±0.00ppm.Simultaneously the 13CNMR spectra of EVA copolymers were assigned by using the SCS parameters obtained. |
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