Epoxidized natural rubber-based nanostructured polymer blends / Chan Chin Han
Blends of poly(3-hydroxybutyrate-<?0-3-hydroxy valerate) (PHBV) with 12 mol% hydroxy valerate (HV) content and epoxidized natural rubber (ENR) with 50 mol% epoxidation level were studied along with the thermal properties and morphologies. Glass transition temperatures reveal immiscibility of the...
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| Format: | Research Reports |
| Language: | English |
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Research Management Institute (RMI)
2010
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| Online Access: | https://ir.uitm.edu.my/id/eprint/21730/ |
| _version_ | 1848805321178349568 |
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| author | Chan, Chin Han |
| author_facet | Chan, Chin Han |
| author_sort | Chan, Chin Han |
| building | UiTM Institutional Repository |
| collection | Online Access |
| description | Blends of poly(3-hydroxybutyrate-<?0-3-hydroxy valerate) (PHBV) with 12 mol% hydroxy valerate (HV) content and epoxidized natural rubber (ENR) with 50 mol% epoxidation level were studied along with the thermal properties and morphologies. Glass transition temperatures reveal immiscibility of the polymers over the entire composition range. The equilibrium melting point (Tm°) of PHBV in blends was determined applying Hoffman-Weeks step-wise annealing procedure. There is no significant variation of Tm° for PHBV with blend composition. Also the crystallinity of PHBV stays approximately constant in the blends, only a slight decrease might be recognized with increasing ENR content. The rate of crystallization of PHBV decreases with PHBV content according to a power law. Morphological studies by polarizing optical microscopy reveal a fine intraspherulitic dispersion of ENR in volume-filling PHBV spherulites, which develop during isothermal crystallization. |
| first_indexed | 2025-11-14T22:09:10Z |
| format | Research Reports |
| id | uitm-21730 |
| institution | Universiti Teknologi MARA |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T22:09:10Z |
| publishDate | 2010 |
| publisher | Research Management Institute (RMI) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uitm-217302018-10-03T08:57:19Z https://ir.uitm.edu.my/id/eprint/21730/ Epoxidized natural rubber-based nanostructured polymer blends / Chan Chin Han Chan, Chin Han Nanostructures Polymers. Macromolecules Blends of poly(3-hydroxybutyrate-<?0-3-hydroxy valerate) (PHBV) with 12 mol% hydroxy valerate (HV) content and epoxidized natural rubber (ENR) with 50 mol% epoxidation level were studied along with the thermal properties and morphologies. Glass transition temperatures reveal immiscibility of the polymers over the entire composition range. The equilibrium melting point (Tm°) of PHBV in blends was determined applying Hoffman-Weeks step-wise annealing procedure. There is no significant variation of Tm° for PHBV with blend composition. Also the crystallinity of PHBV stays approximately constant in the blends, only a slight decrease might be recognized with increasing ENR content. The rate of crystallization of PHBV decreases with PHBV content according to a power law. Morphological studies by polarizing optical microscopy reveal a fine intraspherulitic dispersion of ENR in volume-filling PHBV spherulites, which develop during isothermal crystallization. Research Management Institute (RMI) 2010 Research Reports NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/21730/1/LP_CHAN%20CHIN%20HAN%20RMI%2010_5.pdf Chan, Chin Han (2010) Epoxidized natural rubber-based nanostructured polymer blends / Chan Chin Han. (2010) [Research Reports] <http://terminalib.uitm.edu.my/21730.pdf> (Unpublished) |
| spellingShingle | Nanostructures Polymers. Macromolecules Chan, Chin Han Epoxidized natural rubber-based nanostructured polymer blends / Chan Chin Han |
| title | Epoxidized natural rubber-based nanostructured polymer blends / Chan Chin Han |
| title_full | Epoxidized natural rubber-based nanostructured polymer blends / Chan Chin Han |
| title_fullStr | Epoxidized natural rubber-based nanostructured polymer blends / Chan Chin Han |
| title_full_unstemmed | Epoxidized natural rubber-based nanostructured polymer blends / Chan Chin Han |
| title_short | Epoxidized natural rubber-based nanostructured polymer blends / Chan Chin Han |
| title_sort | epoxidized natural rubber-based nanostructured polymer blends / chan chin han |
| topic | Nanostructures Polymers. Macromolecules |
| url | https://ir.uitm.edu.my/id/eprint/21730/ |