Characterizations of polybenzoxazine modified with isomeric biphenyltetracarboxylic dianhydrides
A series of polymeric alloying films were prepared from bisphenol A/aniline-based bifunctional benzoxazine resin (BA-a) with three isomeric biphenyltetracarboxylic dianhydrides, i.e., 2,3,'3,4'-biphenyltetra carboxylic dianhydride (a-BPDA), 2,2',3,3'-biphenyltetracarboxylic dianh...
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| Language: | English |
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Budapest University of Technology and Economics
2012-10-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0003486&mi=cd |
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| author | B. Ramsiri C. Jubsilp I. Dueramae S. Rimdusit |
| author_facet | B. Ramsiri C. Jubsilp I. Dueramae S. Rimdusit |
| author_sort | B. Ramsiri |
| collection | DOAJ |
| description | A series of polymeric alloying films were prepared from bisphenol A/aniline-based bifunctional benzoxazine resin (BA-a) with three isomeric biphenyltetracarboxylic dianhydrides, i.e., 2,3,'3,4'-biphenyltetra carboxylic dianhydride (a-BPDA), 2,2',3,3'-biphenyltetracarboxylic dianhydride (i-BPDA), and 3,3',4,4'-biphenyltetracarboxylic dianhydride (s-BPDA) through fully thermal curing. Chemical structure, thermomechanical property and thermal stability of bisphenol A/aniline type polybenzoxazine (PBA-a) copolymers were evaluated. Their chemical structures analyzed via Fourier transform infrared spectroscopy reveal ester carbonyl linkage formation between hydroxyl group of the PBA-a and anhydride group in the isomeric dianhydride. Glass transition temperatures (Tgs) of the dianhydride-modified PBA-a increased with PBA-a"<<"i-BPDA"<"a-BPDA"<"s-BPDA. Degradation temperatures (Td) of the PBA-a copolymers recorded to be in the range of 365–402°C were significantly higher than that of the neat PBA-a i.e. 334°C. Finally, char yield of the PBA-a copolymers was found to be about 54–57% which is about twofold increase from that of the parent PBA-a. |
| format | Article |
| id | doaj-art-a957eaba2e16454785ba8e3ffdbd488c |
| institution | Matheson Library |
| issn | 1788-618X |
| language | English |
| publishDate | 2012-10-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-a957eaba2e16454785ba8e3ffdbd488c2025-08-02T16:13:28ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2012-10-0161077378210.3144/expresspolymlett.2012.83Characterizations of polybenzoxazine modified with isomeric biphenyltetracarboxylic dianhydridesB. RamsiriC. JubsilpI. DueramaeS. RimdusitA series of polymeric alloying films were prepared from bisphenol A/aniline-based bifunctional benzoxazine resin (BA-a) with three isomeric biphenyltetracarboxylic dianhydrides, i.e., 2,3,'3,4'-biphenyltetra carboxylic dianhydride (a-BPDA), 2,2',3,3'-biphenyltetracarboxylic dianhydride (i-BPDA), and 3,3',4,4'-biphenyltetracarboxylic dianhydride (s-BPDA) through fully thermal curing. Chemical structure, thermomechanical property and thermal stability of bisphenol A/aniline type polybenzoxazine (PBA-a) copolymers were evaluated. Their chemical structures analyzed via Fourier transform infrared spectroscopy reveal ester carbonyl linkage formation between hydroxyl group of the PBA-a and anhydride group in the isomeric dianhydride. Glass transition temperatures (Tgs) of the dianhydride-modified PBA-a increased with PBA-a"<<"i-BPDA"<"a-BPDA"<"s-BPDA. Degradation temperatures (Td) of the PBA-a copolymers recorded to be in the range of 365–402°C were significantly higher than that of the neat PBA-a i.e. 334°C. Finally, char yield of the PBA-a copolymers was found to be about 54–57% which is about twofold increase from that of the parent PBA-a.http://www.expresspolymlett.com/letolt.php?file=EPL-0003486&mi=cdPolymer blends and alloysPolybenzoxazineIsomeric dianhydrideThermal propertiesMechanical properties |
| spellingShingle | B. Ramsiri C. Jubsilp I. Dueramae S. Rimdusit Characterizations of polybenzoxazine modified with isomeric biphenyltetracarboxylic dianhydrides eXPRESS Polymer Letters Polymer blends and alloys Polybenzoxazine Isomeric dianhydride Thermal properties Mechanical properties |
| title | Characterizations of polybenzoxazine modified with isomeric biphenyltetracarboxylic dianhydrides |
| title_full | Characterizations of polybenzoxazine modified with isomeric biphenyltetracarboxylic dianhydrides |
| title_fullStr | Characterizations of polybenzoxazine modified with isomeric biphenyltetracarboxylic dianhydrides |
| title_full_unstemmed | Characterizations of polybenzoxazine modified with isomeric biphenyltetracarboxylic dianhydrides |
| title_short | Characterizations of polybenzoxazine modified with isomeric biphenyltetracarboxylic dianhydrides |
| title_sort | characterizations of polybenzoxazine modified with isomeric biphenyltetracarboxylic dianhydrides |
| topic | Polymer blends and alloys Polybenzoxazine Isomeric dianhydride Thermal properties Mechanical properties |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0003486&mi=cd |
| work_keys_str_mv | AT bramsiri characterizationsofpolybenzoxazinemodifiedwithisomericbiphenyltetracarboxylicdianhydrides AT cjubsilp characterizationsofpolybenzoxazinemodifiedwithisomericbiphenyltetracarboxylicdianhydrides AT idueramae characterizationsofpolybenzoxazinemodifiedwithisomericbiphenyltetracarboxylicdianhydrides AT srimdusit characterizationsofpolybenzoxazinemodifiedwithisomericbiphenyltetracarboxylicdianhydrides |