Acid Catalyzed Phenyl-Containing Functional Polysiloxane, Synthesis and Characterization
碩士 === 國立臺灣大學 === 化學研究所 === 88 === A series of PDMS/PHMS/PMPS random copolymer were Synthesized in one step through acid catalyzed ring-opening polymerizations. Using D4, D3~4Ph and D4~5H as comonomers, trifluoromethanesulfonic acid (CF3SO3H) as catalyst, hexamethyldisiloxane(M2) as molec...
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ndltd-TW-088NTU000650332016-01-29T04:14:31Z http://ndltd.ncl.edu.tw/handle/70646254250640458329 Acid Catalyzed Phenyl-Containing Functional Polysiloxane, Synthesis and Characterization 酸催化含苯基官能性聚矽氧之合成與鑑定 Hsin Tso Lin 林欣佐 碩士 國立臺灣大學 化學研究所 88 A series of PDMS/PHMS/PMPS random copolymer were Synthesized in one step through acid catalyzed ring-opening polymerizations. Using D4, D3~4Ph and D4~5H as comonomers, trifluoromethanesulfonic acid (CF3SO3H) as catalyst, hexamethyldisiloxane(M2) as molecular weight regulator, a series of random copolymers with different composition(-MeHSiO- unit content 10mol%~50mol% and -MePhSiO- unit content 0mol%~50mol%) were synthesized. The products were characterized by GPC and 29Si-NMR. The Mn of the products ranges in 4.3K~12.1K and the polydispersities(Mw/Mn) is about 1.8~2.8. By using 29Si-NMR, not only the composition but also the monomer sequence of the copolymers were determined. DSC and TGA were used to study the thermal properties of the copolymers. It was found that by introducing the phenyl-containing siloxane unit to the backbone, the glass transition temperature arising regularly and the thermal stability(T50) also increased. In optical characteristics, it was found that the refractive index(nD) is 1.39~1.40 in PDMS/PHMS copolymers, while after introducing the -MePhSiO- unit to the polymer backbone, the refractive index(nD) is increased by 0.1. Mei-Hui Yang 楊美惠 2000 學位論文 ; thesis 89 zh-TW |
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zh-TW |
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碩士 === 國立臺灣大學 === 化學研究所 === 88 === A series of PDMS/PHMS/PMPS random copolymer were Synthesized in one step through acid catalyzed ring-opening polymerizations. Using D4, D3~4Ph and D4~5H as comonomers, trifluoromethanesulfonic acid (CF3SO3H) as catalyst, hexamethyldisiloxane(M2) as molecular weight regulator, a series of random copolymers with different composition(-MeHSiO- unit content 10mol%~50mol% and -MePhSiO- unit content 0mol%~50mol%) were synthesized. The products were characterized by GPC and 29Si-NMR. The Mn of the products ranges in 4.3K~12.1K and the polydispersities(Mw/Mn) is about 1.8~2.8.
By using 29Si-NMR, not only the composition but also the monomer sequence of the copolymers were determined. DSC and TGA were used to study the thermal properties of the copolymers. It was found that by introducing the phenyl-containing siloxane unit to the backbone, the glass transition temperature arising regularly and the thermal stability(T50) also increased.
In optical characteristics, it was found that the refractive index(nD) is 1.39~1.40 in PDMS/PHMS copolymers, while after introducing the -MePhSiO- unit to the polymer backbone, the refractive index(nD) is increased by 0.1.
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author2 |
Mei-Hui Yang |
author_facet |
Mei-Hui Yang Hsin Tso Lin 林欣佐 |
author |
Hsin Tso Lin 林欣佐 |
spellingShingle |
Hsin Tso Lin 林欣佐 Acid Catalyzed Phenyl-Containing Functional Polysiloxane, Synthesis and Characterization |
author_sort |
Hsin Tso Lin |
title |
Acid Catalyzed Phenyl-Containing Functional Polysiloxane, Synthesis and Characterization |
title_short |
Acid Catalyzed Phenyl-Containing Functional Polysiloxane, Synthesis and Characterization |
title_full |
Acid Catalyzed Phenyl-Containing Functional Polysiloxane, Synthesis and Characterization |
title_fullStr |
Acid Catalyzed Phenyl-Containing Functional Polysiloxane, Synthesis and Characterization |
title_full_unstemmed |
Acid Catalyzed Phenyl-Containing Functional Polysiloxane, Synthesis and Characterization |
title_sort |
acid catalyzed phenyl-containing functional polysiloxane, synthesis and characterization |
publishDate |
2000 |
url |
http://ndltd.ncl.edu.tw/handle/70646254250640458329 |
work_keys_str_mv |
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