| STUDY OF THE MOLECULAR MOTION AND COMPATIBILITY IN AB-CROSSLINKED POLYMER BASED ON POLYURETHANE AND POLYSTYRENE-co-ACRYLIC ACID BY SOLID STATE HIGH RESOLUTION NMR |
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| 引用本文： | 贾铭椿,沈联芳,钱保功,张保真,姚树人. STUDY OF THE MOLECULAR MOTION AND COMPATIBILITY IN AB-CROSSLINKED POLYMER BASED ON POLYURETHANE AND POLYSTYRENE-co-ACRYLIC ACID BY SOLID STATE HIGH RESOLUTION NMR[J]. 高分子科学, 1994, 0(1): 33-43 |
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| 作者姓名： | 贾铭椿 沈联芳 钱保功 张保真 姚树人 |
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| 作者单位： | Wuhan Institute of Physics，The Chinese Academy of Sciences，Wuhan 430071，Wuhan Institute of Physics，The Chinese Academy of Sciences，Wuhan 430071，Wuhan Institute of Physics，The Chinese Academy of Sciences，Wuhan 430071，The Naval Academy of Engineering，Wuhan 430033，The Naval Academy of Engineering，Wuhan 430033 |
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| 基金项目： | The project was supported by the National Natural Science Foundation of China |
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| 摘 要： | The ~(13)C T_(1s) of --CH_3 side group in PPU/P (St-co-AA), AB-crosslinked polymers (i. e.ABCP) was studied by using high resolution solid state NMR. The rotation motion of --CH_3 sidegroup in PPU was analyzed by means of the average spectral density functions of internal rota-tion. The results showed that the rotation of the --CH_3 side group is related closely to the com-patibility between the two components. The compatibility was studied by analyzing the protonspin-lattice relaxation in rotating frame, spin-spin relaxation and spin-diffusion. The resultsshowed that the hydrogen bonds between the components play a major role in determining thecompatibility. Through spin diffusion studying, the soft phase domain size was calculated. Bystudying proton spin-spin relaxation, the content of each component in each phase and that ofeach phase in the samples can be obtained. The result shows that the content of interphase is related closely to the compatibility.
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| 收稿时间： | 1992-06-28 |
STUDY OF THE MOLECULAR MOTION AND COMPATIBILITY IN AB-CROSSLINKED POLYMER BASED ON POLYURETHANE AND POLYSTYRENE-co-ACRYLIC ACID BY SOLID STATE HIGH RESOLUTION NMR* |
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| JIA Mingchun,SHEN Lianfang,QIAN Baogon,ZHANG Baozhen,YAO Shuren. STUDY OF THE MOLECULAR MOTION AND COMPATIBILITY IN AB-CROSSLINKED POLYMER BASED ON POLYURETHANE AND POLYSTYRENE-co-ACRYLIC ACID BY SOLID STATE HIGH RESOLUTION NMR*[J]. Chinese Journal of Polymer Science, 1994, 0(1): 33-43 |
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| Authors: | JIA Mingchun SHEN Lianfang QIAN Baogon ZHANG Baozhen YAO Shuren |
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| Affiliation: | Wuhan Institute of Physics; The Chinese Academy of Sciences; Wuhan; The Naval Academy of Engineering |
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| Abstract: | The ~(13)C T_(1s) of --CH_3 side group in PPU/P (St-co-AA), AB-crosslinked polymers (i. e.ABCP) was studied by using high resolution solid state NMR. The rotation motion of --CH_3 sidegroup in PPU was analyzed by means of the average spectral density functions of internal rota-tion. The results showed that the rotation of the --CH_3 side group is related closely to the com-patibility between the two components. The compatibility was studied by analyzing the protonspin-lattice relaxation in rotating frame, spin-spin relaxation and spin-diffusion. The resultsshowed that the hydrogen bonds between the components play a major role in determining thecompatibility. Through spin diffusion studying, the soft phase domain size was calculated. Bystudying proton spin-spin relaxation, the content of each component in each phase and that ofeach phase in the samples can be obtained. The result shows that the content of interphase is related closely to the compatibility. |
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| Keywords: | Spin-lattice relaxation AB-crosslinked polymer Molecular motion Compatibility Spin-diffusion |
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