Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions

ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Physics
Notes:
Summary Linear polyisobutylene (PIB) molecules with either hydroxyl or isopropenyl groups at the chain ends were prepared using cationic polymerizations with bifunctional initiator-chain transfer agents. Extensive spectroscopic analyses confirmed the essentially perfect difunctionality of the two types of polymers. The former polymers were end-linked using an aromatic triisocyanate, and the latter by means of a tetrafunctional silane. The resulting trifunctional and tetrafunctional model PIB networks were found to have absolutely negligible sol fractions, which demonstrates that the end-linking reactions used to prepare them were essentially complete. The networks were studied with regard to their equilibrium stress-strain isotherms in uniaxial extension at 25 °C. The results thus obtained are in satisfactory agreement with theory and yield no evidence whatever for significant elastic contributions from inter-chain entanglements.
Type of Medium:
Electronic Resource
URL:
_version_ 1798296233310158848
autor Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
autorsonst Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
book_url http://dx.doi.org/10.1007/BF00265316
datenlieferant nat_lic_papers
hauptsatz hsatz_simple
identnr NLM203095324
issn 1436-2449
journal_name Polymer bulletin
materialart 1
notes Summary Linear polyisobutylene (PIB) molecules with either hydroxyl or isopropenyl groups at the chain ends were prepared using cationic polymerizations with bifunctional initiator-chain transfer agents. Extensive spectroscopic analyses confirmed the essentially perfect difunctionality of the two types of polymers. The former polymers were end-linked using an aromatic triisocyanate, and the latter by means of a tetrafunctional silane. The resulting trifunctional and tetrafunctional model PIB networks were found to have absolutely negligible sol fractions, which demonstrates that the end-linking reactions used to prepare them were essentially complete. The networks were studied with regard to their equilibrium stress-strain isotherms in uniaxial extension at 25 °C. The results thus obtained are in satisfactory agreement with theory and yield no evidence whatever for significant elastic contributions from inter-chain entanglements.
package_name Springer
publikationsjahr_anzeige 1983
publikationsjahr_facette 1983
publikationsjahr_intervall 8019:1980-1984
publikationsjahr_sort 1983
publisher Springer
reference 9 (1983), S. 375-381
search_space articles
shingle_author_1 Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
shingle_author_2 Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
shingle_author_3 Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
shingle_author_4 Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
shingle_catch_all_1 Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
Summary Linear polyisobutylene (PIB) molecules with either hydroxyl or isopropenyl groups at the chain ends were prepared using cationic polymerizations with bifunctional initiator-chain transfer agents. Extensive spectroscopic analyses confirmed the essentially perfect difunctionality of the two types of polymers. The former polymers were end-linked using an aromatic triisocyanate, and the latter by means of a tetrafunctional silane. The resulting trifunctional and tetrafunctional model PIB networks were found to have absolutely negligible sol fractions, which demonstrates that the end-linking reactions used to prepare them were essentially complete. The networks were studied with regard to their equilibrium stress-strain isotherms in uniaxial extension at 25 °C. The results thus obtained are in satisfactory agreement with theory and yield no evidence whatever for significant elastic contributions from inter-chain entanglements.
1436-2449
14362449
Springer
shingle_catch_all_2 Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
Summary Linear polyisobutylene (PIB) molecules with either hydroxyl or isopropenyl groups at the chain ends were prepared using cationic polymerizations with bifunctional initiator-chain transfer agents. Extensive spectroscopic analyses confirmed the essentially perfect difunctionality of the two types of polymers. The former polymers were end-linked using an aromatic triisocyanate, and the latter by means of a tetrafunctional silane. The resulting trifunctional and tetrafunctional model PIB networks were found to have absolutely negligible sol fractions, which demonstrates that the end-linking reactions used to prepare them were essentially complete. The networks were studied with regard to their equilibrium stress-strain isotherms in uniaxial extension at 25 °C. The results thus obtained are in satisfactory agreement with theory and yield no evidence whatever for significant elastic contributions from inter-chain entanglements.
1436-2449
14362449
Springer
shingle_catch_all_3 Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
Summary Linear polyisobutylene (PIB) molecules with either hydroxyl or isopropenyl groups at the chain ends were prepared using cationic polymerizations with bifunctional initiator-chain transfer agents. Extensive spectroscopic analyses confirmed the essentially perfect difunctionality of the two types of polymers. The former polymers were end-linked using an aromatic triisocyanate, and the latter by means of a tetrafunctional silane. The resulting trifunctional and tetrafunctional model PIB networks were found to have absolutely negligible sol fractions, which demonstrates that the end-linking reactions used to prepare them were essentially complete. The networks were studied with regard to their equilibrium stress-strain isotherms in uniaxial extension at 25 °C. The results thus obtained are in satisfactory agreement with theory and yield no evidence whatever for significant elastic contributions from inter-chain entanglements.
1436-2449
14362449
Springer
shingle_catch_all_4 Sung, P. -H.
Pan, S. -J.
Mark, J. E.
Chang, V. S. C.
Lackey, J. E.
Kennedy, J. P.
Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
Summary Linear polyisobutylene (PIB) molecules with either hydroxyl or isopropenyl groups at the chain ends were prepared using cationic polymerizations with bifunctional initiator-chain transfer agents. Extensive spectroscopic analyses confirmed the essentially perfect difunctionality of the two types of polymers. The former polymers were end-linked using an aromatic triisocyanate, and the latter by means of a tetrafunctional silane. The resulting trifunctional and tetrafunctional model PIB networks were found to have absolutely negligible sol fractions, which demonstrates that the end-linking reactions used to prepare them were essentially complete. The networks were studied with regard to their equilibrium stress-strain isotherms in uniaxial extension at 25 °C. The results thus obtained are in satisfactory agreement with theory and yield no evidence whatever for significant elastic contributions from inter-chain entanglements.
1436-2449
14362449
Springer
shingle_title_1 Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
shingle_title_2 Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
shingle_title_3 Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
shingle_title_4 Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
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source_archive Springer Online Journal Archives 1860-2000
timestamp 2024-05-06T09:48:50.163Z
titel Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
titel_suche Polyisobutylene model elastomers prepared using demonstrably complete end-linking reactions
topic V
ZL
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