Preparation and characterization of unradiated and radiated poly(lactic acid) bio-based nanocomposites / (Record no. 65305)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03403cam a2200337 a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EG-GiCUC |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250223031939.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 180306s2017 ua d f m 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EG-GiCUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GiCUC |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 049 ## - LOCAL HOLDINGS (OCLC) | |
| Holding library | Deposite |
| 097 ## - Thesis Degree | |
| Thesis Level | M.Sc |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | Cai01.12.11.M.Sc.2017.Ai.P |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Aisha Mohamed Sayed Mohamed Ali Elabed |
| 245 10 - TITLE STATEMENT | |
| Title | Preparation and characterization of unradiated and radiated poly(lactic acid) bio-based nanocomposites / |
| Statement of responsibility, etc. | Aisha Mohamed Sayed Mohamed Ali Elabed ; Supervised Gamal Riad Saad Khalil , Nabila Ahmed Mazid |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | تحض{u٠٦أأ}ر و توص{u٠٦أأ}ف متراكبات نانون{u٠٦أأ}ة غ{u٠٦أأ}ر مشععة و مشععة مبن{u٠٦أأ}ة على بول{u٠٦أأ}مر حمض اللاكت{u٠٦أأ}ك الح{u٠٦أأ}وي |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Cairo : |
| Name of publisher, distributor, etc. | Aisha Mohamed Sayed Mohamed Ali Elabed , |
| Date of publication, distribution, etc. | 2017 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 74 P. : |
| Other physical details | charts ; |
| Dimensions | 25cm |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Physical Chemistry |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Poly(lactic acid) (PLA) loaded with various levels of chitosan nanoparticles (CsNP) (0{u2013}5.0%) were prepared by twin{u2013}screw extrusion. The nanocomposites were investigated based on their morphology, thermal, mechanical and dielectric properties. The SEM morphology showed that CsNP was dispersed uniformly in the PLA matrix. Mechanical properties of nanocomposites were investigated. Incorporation of the CsNP in the PLA matrix improved the elongation and the impact strength, but decreased the tensile strength. A reduction in the creep strain of the composites was observed compared with neat PLA, indicating an enhancement performance of the nanocomposites. Thermal analysis through DSC revealed that the cold crystallization temperature of PLA in the case of nanocomposites slightly decreased with increasing content of CsNP; indicating a limit nucleating effect of CsNP. TGA analysis revealed that the incorporation CsNP slightly decreased the thermal stability of the PLA matrix. The dielectric properties of these materials have been investigated for the Ü- relaxation process as a function of the temperature and frequency. The Ü- relaxation process was analyzed with Vogel-Fulcher-Tamman and Havriliak{u2013} Negami models and fitting parameters and their evolution were obtained. The effect of Þ-irradiation on the properties of poly(lactic acid), PLA, and PLA composite containing 3.0% chitosan nanoparticles, PLA-3CsNP, was also investigated due to sterilization required in medical and packaging applications. The tested materials were exposed to Þ-irradiation at different doses (5-40 kGy). The irradiated samples both in solid state or chloroform solution were characterized with respect to physicochemical properties. The tested materials showed a reduction in the molecular weight with the increase in irradiation dose, indicating that random chain scissions of the main chains, as dominant effect of Þ-irradiation, was occurred |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Additional physical form available note | Issued also as CD |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Chitosan nanoparticles |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Nanocomposites |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Poly(lactic acid) |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Gamal Riad Saad Khalil , |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Nabila Ahmed Mazid , |
| Relator term | |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://172.23.153.220/th.pdf">http://172.23.153.220/th.pdf</a> |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Nazla |
| Reviser | Revisor |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Shimaa |
| Reviser | Cataloger |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Source of classification or shelving scheme | Not for loan | Home library | Current library | Date acquired | Full call number | Barcode | Date last seen | Koha item type | Copy number |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 11.02.2024 | Cai01.12.11.M.Sc.2017.Ai.P | 01010110074547000 | 22.09.2023 | Thesis | ||
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | مخـــزن الرســائل الجـــامعية - البدروم | 11.02.2024 | Cai01.12.11.M.Sc.2017.Ai.P | 01020110074547000 | 22.09.2023 | CD - Rom | 74547.CD |