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Effect Of Organic Solvent On The Entrapment Of 25 Mole Percent Epoxidized Natural Rubber In Preformed Cyclomatrix Poly(1,3-Dioxybenzene) Cyclotriphosphazenes

Blending of 25 mole percent epoxidized natural rubber (ENR-25) with preformed cyclomatrix poly(1,3-dioxybenzene)cyclotriphosphazene (P5) was carried out in toluene, methylene chloride, tetrahydrofuran, cyclohexane and 1,4-dioxane. Entrapment studies with the aid of Differential Scanning Calorimet...

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Main Author: Oh , Cheng Cheow
Format: Thesis
Language:English
Published: 2009
Subjects:
QD1-65 General Including alchemy
Online Access:http://eprints.usm.my/41943/1/OH_CHENG_CHEOW_HJ.pdf
http://eprints.usm.my/41943/
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spelling my.usm.eprints.41943 http://eprints.usm.my/41943/ Effect Of Organic Solvent On The Entrapment Of 25 Mole Percent Epoxidized Natural Rubber In Preformed Cyclomatrix Poly(1,3-Dioxybenzene) Cyclotriphosphazenes Oh , Cheng Cheow QD1-65 General Including alchemy Blending of 25 mole percent epoxidized natural rubber (ENR-25) with preformed cyclomatrix poly(1,3-dioxybenzene)cyclotriphosphazene (P5) was carried out in toluene, methylene chloride, tetrahydrofuran, cyclohexane and 1,4-dioxane. Entrapment studies with the aid of Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) revealed that P5 can trap ENR-25 chains. The DSC and TGA data for [P5/ENR-25]b synthesized in all the studied solvents except toluene, revealed the presence of untrapped ENR-25. No untrapped ENR-25 is obtained in the DSC and TGA analysis results of the product synthesized in toluene, [P5/ENR-25]b-Toluene. As such, it can be concluded that synthesis in toluene lead to complete entrapment of ENR-25 in P5. The swelling of P5 in toluene facilitates the effective entrapment of ENR-25 chains into P5. The results of DSC analysis revealed the improvement in thermal properties of [P5/ENR-25]b-Toluene, with higher melting temperature (Tm) of 125 oC, as compared to that of the starting materials (with Tm of 117 oC for P5 and Tg of -44 oC for ENR-25). The results of FTIR analysis of the different products revealed no change in the functional groups of the ENR-25 entrapped in P5, as indicated by the insignificant shift of the absorption frequencies. Therefore it is likely that there is no chemical reaction involve in the entrapment of the ENR-25 chains in P5. 2009-11 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/41943/1/OH_CHENG_CHEOW_HJ.pdf Oh , Cheng Cheow (2009) Effect Of Organic Solvent On The Entrapment Of 25 Mole Percent Epoxidized Natural Rubber In Preformed Cyclomatrix Poly(1,3-Dioxybenzene) Cyclotriphosphazenes. Masters thesis, Universiti Sains Malaysia.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic QD1-65 General Including alchemy
spellingShingle QD1-65 General Including alchemy
Oh , Cheng Cheow
Effect Of Organic Solvent On The Entrapment Of 25 Mole Percent Epoxidized Natural Rubber In Preformed Cyclomatrix Poly(1,3-Dioxybenzene) Cyclotriphosphazenes
description Blending of 25 mole percent epoxidized natural rubber (ENR-25) with preformed cyclomatrix poly(1,3-dioxybenzene)cyclotriphosphazene (P5) was carried out in toluene, methylene chloride, tetrahydrofuran, cyclohexane and 1,4-dioxane. Entrapment studies with the aid of Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) revealed that P5 can trap ENR-25 chains. The DSC and TGA data for [P5/ENR-25]b synthesized in all the studied solvents except toluene, revealed the presence of untrapped ENR-25. No untrapped ENR-25 is obtained in the DSC and TGA analysis results of the product synthesized in toluene, [P5/ENR-25]b-Toluene. As such, it can be concluded that synthesis in toluene lead to complete entrapment of ENR-25 in P5. The swelling of P5 in toluene facilitates the effective entrapment of ENR-25 chains into P5. The results of DSC analysis revealed the improvement in thermal properties of [P5/ENR-25]b-Toluene, with higher melting temperature (Tm) of 125 oC, as compared to that of the starting materials (with Tm of 117 oC for P5 and Tg of -44 oC for ENR-25). The results of FTIR analysis of the different products revealed no change in the functional groups of the ENR-25 entrapped in P5, as indicated by the insignificant shift of the absorption frequencies. Therefore it is likely that there is no chemical reaction involve in the entrapment of the ENR-25 chains in P5.
format Thesis
author Oh , Cheng Cheow
author_facet Oh , Cheng Cheow
author_sort Oh , Cheng Cheow
title Effect Of Organic Solvent On The Entrapment Of 25 Mole Percent Epoxidized Natural Rubber In Preformed Cyclomatrix Poly(1,3-Dioxybenzene) Cyclotriphosphazenes
title_short Effect Of Organic Solvent On The Entrapment Of 25 Mole Percent Epoxidized Natural Rubber In Preformed Cyclomatrix Poly(1,3-Dioxybenzene) Cyclotriphosphazenes
title_full Effect Of Organic Solvent On The Entrapment Of 25 Mole Percent Epoxidized Natural Rubber In Preformed Cyclomatrix Poly(1,3-Dioxybenzene) Cyclotriphosphazenes
title_fullStr Effect Of Organic Solvent On The Entrapment Of 25 Mole Percent Epoxidized Natural Rubber In Preformed Cyclomatrix Poly(1,3-Dioxybenzene) Cyclotriphosphazenes
title_full_unstemmed Effect Of Organic Solvent On The Entrapment Of 25 Mole Percent Epoxidized Natural Rubber In Preformed Cyclomatrix Poly(1,3-Dioxybenzene) Cyclotriphosphazenes
title_sort effect of organic solvent on the entrapment of 25 mole percent epoxidized natural rubber in preformed cyclomatrix poly(1,3-dioxybenzene) cyclotriphosphazenes
publishDate 2009
url http://eprints.usm.my/41943/1/OH_CHENG_CHEOW_HJ.pdf
http://eprints.usm.my/41943/
_version_ 1643710366898716672
score 13.222552

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