Thermal history effects on crystallisation and melting of poly(3-hydroxybutyrate) (Record no. 47686)
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| 000 -LEADER | |
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| fixed length control field | 02454nam a2200253Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250625153923.0 |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | B-13487 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT | |
| Title | Thermal history effects on crystallisation and melting of poly(3-hydroxybutyrate) |
| 490 0# - SERIES STATEMENT | |
| Volume/sequential designation | Thermochimica Acta, 423(1-2), p.127-135, 2004 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | The effect of thermal history on morphology, melting and crystallisation behaviour of bacterial poly(3-hydoxybutyrate)(PHB)have been investigated by using differential scanning calorimetry (DSC), temperature modulated DSC (TMDSC)and hot stage optical microscopy (HSOM). Various thermal histories were imparted by crystallisation with different continuous and modulated cooling techniques that involve cool-heat and cool-isothermal segments. The subsequent melting behaviour revealed that all samples experienced secondary crystallisation during heating and the extent of secondary crystallisation was varied depending on the treatment. PHB samples rystallised under slow to moderate continuous cooling rates were found to exhibit double melting behaviour due to melting of DSC scan-induced secondary crystals, but to a lesser extent. Samples subjected to a fast cooling rate gave amorphous PHB, while considerable secondary crystallisation/annealing took place under modulated cooling conditions. Additionally, the effect of melting conditions was also investigated by applying various continuous and modulated programs. The overall melting behaviourwas rationalised in terms of recrystallisation and/or annealing of crystals. Interestingly, the samples analysed by temperature modulation programs showed a broad exotherm before the melting peak in the non-reversing curve and a multiple melting reversing curve, verifying that the melting-recrystallisation and remelting process is also operative. HSOM studies supported that the radial growth rate of the PHB spherulites was significantly varied upon the crystallisation conditions. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | POLY(3-HYDROXYBUTYRATE) |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | STEP-SCAN DSC |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | TMDSC |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | MELTING |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | CRYSTALLISATION |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Gunaratne, L.M.W.K. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Shanks, R.A. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Amarasinghe, G. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://drive.google.com/file/d/1k931wi0GjxEAGBgEW0qIbo5dgrS4QU_T/view?usp=drivesdk">https://drive.google.com/file/d/1k931wi0GjxEAGBgEW0qIbo5dgrS4QU_T/view?usp=drivesdk</a> |
| Public note | Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Clasificación local |
| Koha item type | Documentos solicitados |
| Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Price effective from | Koha item type |
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| Clasificación local | Ref1 | CICY | CICY | Documento préstamo interbibliotecario | 25.06.2025 | B-13487 | 25.06.2025 | 25.06.2025 | Documentos solicitados |