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Synthesis and studies of polysiloxan...

Li, Jun.

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Synthesis and studies of polysiloxane/polysilylenemethylene copolymers.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Synthesis and studies of polysiloxane/polysilylenemethylene copolymers./
作者:	Li, Jun.
面頁冊數:	147 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-04, Section: B, page: 2094.
Contained By:	Dissertation Abstracts International66-04B.
標題:	Chemistry, Polymer. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3173275
ISBN:	0542106817

Synthesis and studies of polysiloxane/polysilylenemethylene copolymers.
Li, Jun.

Synthesis and studies of polysiloxane/polysilylenemethylene copolymers. - 147 p.

Source: Dissertation Abstracts International, Volume: 66-04, Section: B, page: 2094.

Thesis (Ph.D.)--Rensselaer Polytechnic Institute, 2005.

This thesis research is concerned with the development of a methodology for preparation of various polysiloxane/polysilylenemethylene copolymers and the study of their physical and chemical properties.

ISBN: 0542106817Subjects--Topical Terms:

1018428
Chemistry, Polymer.

Synthesis and studies of polysiloxane/polysilylenemethylene copolymers.
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245 1 0 $a Synthesis and studies of polysiloxane/polysilylenemethylene copolymers.
300 $a 147 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-04, Section: B, page: 2094.
500 $a Adviser: Leonard V. Interrante.
502 $a Thesis (Ph.D.)--Rensselaer Polytechnic Institute, 2005.
520 $a This thesis research is concerned with the development of a methodology for preparation of various polysiloxane/polysilylenemethylene copolymers and the study of their physical and chemical properties.
520 $a The [Si(Me)2OSi(Me)2CH2]n polymer was prepared by means of a cationic ring-opening polymerization with triflic acid as the initiator. NMR, DSC and TGA were used to characterize the polymer. The polymer showed a high thermal stability in an inert atmosphere. A glass transition was found at -106°C, which lies in between those of its homopolymer polysiloxane and polysilylenemethylene analogs.
520 $a A low molecular weight [SiEt2OSiEt2CH2] n polymers (Mn &sim; 4000) was prepared by the polycondensation reaction of tetraethyldisilamethane-1,3-diol. A clear glass transition at -101°C was found by DSC for this oligomer and no other thermal transitions were observed. This is higher than the glass transition temperature reported for polydiethylsiloxane (-138°C).
520 $a The [SiMeHOSiMeHCH2]n polymer was synthesized by cationic ring-opening polymerization with triflic acid as the initiator and different side chains were successfully attached to the polymer through hydrosilation reaction. It was found that the glass transition temperatures of the polymers obtained were always in the middle of the range between the Tgs of their PSM and PSO analogs. High degrees of substitution, 91--100%, were found for the hydrosilation reactions.
520 $a The preparation and studies of polymers with [(SiRR'O) x(SiRR'CH2)y] n, (x = 2, y = 1, x = 1, y = 2) backbone structures were also carried out in this thesis research. A series of polymers with different substituents, such as phenyl, ethyl, isobutyl and hydrido, were prepared and the properties of these polymers were studied and compared with that of the related parent polymers.
590 $a School code: 0185.
650 4 $a Chemistry, Polymer. $3 1018428
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710 2 0 $a Rensselaer Polytechnic Institute. $3 1019062
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790 1 0 $a Interrante, Leonard V., $e advisor
790 $a 0185
791 $a Ph.D.
792 $a 2005
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