Polystyrene-b-polydimethyl siloxane (PDMS) multicomponent polymer networks: Styrene polymerization with macromonomeric initiators (macroinimers) having PDMS units

A new macromonomeric initiator (macroinimer) was synthesized and evaluated for the bulk polymerization of styrene at 60 and 80°C. The macroinimer containing poly(dimethylsiloxane), PDMS, was synthesized via condensation reactions between 4,-4'-azobis-4-cyanopentanoyl chloride (ACPC), PDMS and methacryloyl chloride. The product (MIM I) was thermally homopolymerized and copolymerized with styrene in bulk. Kinetics of radical polymerization of styrene with MIM I at 60°C and at low conversion was studied. Rate constant K, k p (fk d /k t ) 1/2 , was estimated from kinetic data as 1.15 × 10 -4 1 1/2 mol -1/2 s. Bulk polymerization of styrene with macroinimers at 80°C gave crosslinked block copolymers. D.s.c. measurements showed that crosslinked block copolymers had a glass transition temperature around 45°C. This is evidence of a plasticizing effect of flexible polysiloxane segments in copolymers. Crosslinked PDMS-b-PS block copolymers obtained using macroinimers may be an interesting group of thermoplastic elastomers. © 1997 Elsevier Science Ltd.

Dergi Adı Polymer
Dergi Cilt Bilgisi 38
Dergi Sayısı 12
Sayfalar 2981 - 2987
Yayın Yılı 1997
Eser Adı
[dc.title]
Polystyrene-b-polydimethyl siloxane (PDMS) multicomponent polymer networks: Styrene polymerization with macromonomeric initiators (macroinimers) having PDMS units
Yazar
[dc.contributor.author]
Hamurcu, E. Elif
Yazar
[dc.contributor.author]
Hazer, Baki
Yazar
[dc.contributor.author]
Baysal, B. M.
Yayın Yılı
[dc.date.issued]
1997
Yayıncı
[dc.publisher]
Elsevier BV
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
A new macromonomeric initiator (macroinimer) was synthesized and evaluated for the bulk polymerization of styrene at 60 and 80°C. The macroinimer containing poly(dimethylsiloxane), PDMS, was synthesized via condensation reactions between 4,-4'-azobis-4-cyanopentanoyl chloride (ACPC), PDMS and methacryloyl chloride. The product (MIM I) was thermally homopolymerized and copolymerized with styrene in bulk. Kinetics of radical polymerization of styrene with MIM I at 60°C and at low conversion was studied. Rate constant K, k p (fk d /k t ) 1/2 , was estimated from kinetic data as 1.15 × 10 -4 1 1/2 mol -1/2 s. Bulk polymerization of styrene with macroinimers at 80°C gave crosslinked block copolymers. D.s.c. measurements showed that crosslinked block copolymers had a glass transition temperature around 45°C. This is evidence of a plasticizing effect of flexible polysiloxane segments in copolymers. Crosslinked PDMS-b-PS block copolymers obtained using macroinimers may be an interesting group of thermoplastic elastomers. © 1997 Elsevier Science Ltd.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
Macroinimer
Konu Başlıkları
[dc.subject]
Poly(dimethylsiloxane)
Konu Başlıkları
[dc.subject]
Poly(S-b-PDMS) polymer network
Künye
[dc.identifier.citation]
Elif Hamurcu, E., Hazer, B. ve Baysal, B. M. (1997). Polystyrene-b-polydimethyl siloxane (Pdms) multicomponent polymer networks: Styrene polymerization with macromonomeric initiators (Macroinimers) having PDMS units. Polymer, 38(12), 2981-2987. doi:10.1016/S0032-3861(96)00864-6
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
0032-3861
İlk Sayfa Sayısı
[dc.identifier.startpage]
2981
Son Sayfa Sayısı
[dc.identifier.endpage]
2987
Dergi Adı
[dc.relation.journal]
Polymer
Dergi Sayısı
[dc.identifier.issue]
12
Dergi Cilt Bilgisi
[dc.identifier.volume]
38
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1016/S0032-3861(96)00864-6
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/7059
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copolymers styrene polymerization crosslinked macroinimers chloride synthesized temperature around transition showed measurements polysiloxane Science Elsevier elastomers thermoplastic interesting obtained PDMS-b-PS Crosslinked segments flexible effect plasticizing evidence condensation product methacryloyl (ACPC) -azobis-4-cyanopentanoyl between reactions homopolymerized poly(dimethylsiloxane)
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