High Glass Transition and Optical Transparency of Novel Organosoluble Polyamides Containing 4-tert-Butyltoluene Moiety
A series of novel polyamides 3a-3d containing 4-tert-butyltoluene moiety, were prepared using the phosphorylation polycondensation technique. FT-IR and 1↑H NMR techniques were used to investigate the chemical structures of 3a-3d. The results confirmed that they agreed with the proposed structures fo...
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| Published in | Chinese journal of chemistry Vol. 29; no. 10; pp. 2197 - 2201 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Weinheim
WILEY-VCH Verlag
01.10.2011
WILEY‐VCH Verlag Wiley Subscription Services, Inc |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-604X 1614-7065 |
| DOI | 10.1002/cjoc.201180380 |
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| Summary: | A series of novel polyamides 3a-3d containing 4-tert-butyltoluene moiety, were prepared using the phosphorylation polycondensation technique. FT-IR and 1↑H NMR techniques were used to investigate the chemical structures of 3a-3d. The results confirmed that they agreed with the proposed structures for 3a-3d completely. The 3a-3d had inherent viscosities ranging from 0.71 to 1.67 dL·g^-1. All the polyamides showed excellent solubility, with the dissolvability at a concentration of 10 wt% in most amide polar solvents. Flexible and tough polyamide films could be prepared by casting from DMAc （N,N-dimethylacetamide） solvent. Their films were nearly colorless and exhibited high optical transparency, with the UV cutoff wavelength in the range of 346-363 nm and transmittance higher than 80% at 450 nm. They also exhibited high glass transition temperatures in the range of 310---343℃ and the onset decomposition temperatures in the range of 435-462 ℃ in nitrogen atmosphere. Meanwhile, these polyamide films possess good mechanical properties with tensile strengths of 76.4-86.1 MPa and elongations at break of 11.2%-27.3%. Due to those properties, these polyamides could be considered as photoelectric and microelectronic materials. |
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| Bibliography: | A series of novel polyamides 3a-3d containing 4-tert-butyltoluene moiety, were prepared using the phosphorylation polycondensation technique. FT-IR and 1↑H NMR techniques were used to investigate the chemical structures of 3a-3d. The results confirmed that they agreed with the proposed structures for 3a-3d completely. The 3a-3d had inherent viscosities ranging from 0.71 to 1.67 dL·g^-1. All the polyamides showed excellent solubility, with the dissolvability at a concentration of 10 wt% in most amide polar solvents. Flexible and tough polyamide films could be prepared by casting from DMAc （N,N-dimethylacetamide） solvent. Their films were nearly colorless and exhibited high optical transparency, with the UV cutoff wavelength in the range of 346-363 nm and transmittance higher than 80% at 450 nm. They also exhibited high glass transition temperatures in the range of 310---343℃ and the onset decomposition temperatures in the range of 435-462 ℃ in nitrogen atmosphere. Meanwhile, these polyamide films possess good mechanical properties with tensile strengths of 76.4-86.1 MPa and elongations at break of 11.2%-27.3%. Due to those properties, these polyamides could be considered as photoelectric and microelectronic materials. 31-1547/O6 Wang, Cheny Zhao, Xiaoyan Li, Guang Jiang, Jianrning （1. Changzhou Key Laboratory for Polymer Materials, School of Material Science and Engineering, Changzhou University, Changzhou, Guangdong 213164, China ;2. School of Petrochemical Engineering, Changzhou University, Changzhou, Guangdong 213164, China;3. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China） polyamides, solubility, optical transparency the Opening Project of State Key Laboratory for Modification of Chemical Fibers and Polymer Materials - No. LK1001 ark:/67375/WNG-G551FHNZ-Q the National Natural Science Foundation of China - No. 51103016 the Grant-in-aid for Youth Innovation Fund from Changzhou University - No. ZMF11020017 and ZMF1002106 ArticleID:CJOC201180380 istex:8FD8AF9AA0683FA50CCB0DD41F22AAB4A5D1A2B1 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 |
| ISSN: | 1001-604X 1614-7065 |
| DOI: | 10.1002/cjoc.201180380 |