caa a22 4500 465787029 CHVBK 20180323112012.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF00306577 doi (NATIONALLICENCE)springer-10.1007/BF00306577 Thermotropic copolyesters modified with nonmesogenic rigid groups [Elektronische Daten] [Hong-Bing Tsai, Chyun Lee, Nien-Shi Chang, Andrew Hu] Summary: Two series of copolyesters of sebacic acid, 4,4′-biphenol and a nonmesogenic rigid diol which was either bisphenol A (BPA series) or hydroquinone (HQ series) were prepared by melt polycondensation. The thermal transitions and melt birefringence which were investigated by DSC and polarized microscope respectively. Homopolyester of 4,4-biphenol and sebacic acid (PB8) was found to show two transition temperatures corresponded to Tm and Ti respectively. For the BPA series, the incorporation of amorphous bisphenol A unit by copolymerization decreased both Tm and Ti and completely destroyed the mesophase as the content of bisphenol A unit was over 50 mole%. For the HQ series, the incorporation of crystalline hydroquinone unit decreased Tm to more extent, but decreased Ti to less extent as compared to the BPA series. When the hydroquinone unit was as high as 80 mole%, the mesophase was completely destroyed. Springer-Verlag, 1990 Tsai Hong-Bing Union Chemical Laboratories, Industrial Technology Research Institute, 321, Kuang Fu Road, Sec. 2, 30042, Hsinchu, Taiwan, Republic of China aut Lee Chyun Union Chemical Laboratories, Industrial Technology Research Institute, 321, Kuang Fu Road, Sec. 2, 30042, Hsinchu, Taiwan, Republic of China aut Chang Nien-Shi Union Chemical Laboratories, Industrial Technology Research Institute, 321, Kuang Fu Road, Sec. 2, 30042, Hsinchu, Taiwan, Republic of China aut Hu Andrew Union Chemical Laboratories, Industrial Technology Research Institute, 321, Kuang Fu Road, Sec. 2, 30042, Hsinchu, Taiwan, Republic of China aut Polymer Bulletin Springer-Verlag 24/3(1990-09-01), 293-297 0170-0839 24:3<293 1990 24 289 https://doi.org/10.1007/BF00306577 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00306577 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tsai Hong-Bing Union Chemical Laboratories, Industrial Technology Research Institute, 321, Kuang Fu Road, Sec. 2, 30042, Hsinchu, Taiwan, Republic of China aut NATIONALLICENCE 700 1- Lee Chyun Union Chemical Laboratories, Industrial Technology Research Institute, 321, Kuang Fu Road, Sec. 2, 30042, Hsinchu, Taiwan, Republic of China aut NATIONALLICENCE 700 1- Chang Nien-Shi Union Chemical Laboratories, Industrial Technology Research Institute, 321, Kuang Fu Road, Sec. 2, 30042, Hsinchu, Taiwan, Republic of China aut NATIONALLICENCE 700 1- Hu Andrew Union Chemical Laboratories, Industrial Technology Research Institute, 321, Kuang Fu Road, Sec. 2, 30042, Hsinchu, Taiwan, Republic of China aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 24/3(1990-09-01), 293-297 0170-0839 24:3<293 1990 24 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 465787029 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer