1 resultado para Phytate Hydrolysis
em Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP)
Filtro por publicador
- Repository Napier (1)
- ABACUS. Repositorio de Producción Científica - Universidad Europea (1)
- Aberdeen University (1)
- Aberystwyth University Repository - Reino Unido (1)
- Aquatic Commons (12)
- Archimer: Archive de l'Institut francais de recherche pour l'exploitation de la mer (1)
- Archive of European Integration (3)
- Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (9)
- Aston University Research Archive (4)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (13)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (62)
- Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (12)
- Bioline International (1)
- BORIS: Bern Open Repository and Information System - Berna - Suiça (7)
- Boston University Digital Common (1)
- Brock University, Canada (8)
- Bucknell University Digital Commons - Pensilvania - USA (3)
- CaltechTHESIS (12)
- Cambridge University Engineering Department Publications Database (2)
- CentAUR: Central Archive University of Reading - UK (99)
- Chinese Academy of Sciences Institutional Repositories Grid Portal (137)
- Cochin University of Science & Technology (CUSAT), India (27)
- CORA - Cork Open Research Archive - University College Cork - Ireland (7)
- Deakin Research Online - Australia (58)
- DI-fusion - The institutional repository of Université Libre de Bruxelles (2)
- Digital Commons - Michigan Tech (2)
- Digital Knowledge Repository of Central Drug Research Institute (1)
- DigitalCommons@The Texas Medical Center (1)
- Duke University (6)
- eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (9)
- Glasgow Theses Service (1)
- Greenwich Academic Literature Archive - UK (2)
- Helda - Digital Repository of University of Helsinki (23)
- Indian Institute of Science - Bangalore - Índia (137)
- Infoteca EMBRAPA (1)
- Instituto Politécnico do Porto, Portugal (5)
- National Center for Biotechnology Information - NCBI (14)
- Plymouth Marine Science Electronic Archive (PlyMSEA) (4)
- QSpace: Queen's University - Canada (1)
- QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (103)
- Queensland University of Technology - ePrints Archive (66)
- Repositório Alice (Acesso Livre à Informação Científica da Embrapa / Repository Open Access to Scientific Information from Embrapa) (1)
- Repositório Científico do Instituto Politécnico de Lisboa - Portugal (1)
- Repositório Institucional da Universidade de Aveiro - Portugal (11)
- Repositório Institucional da Universidade Federal do Rio Grande do Norte (1)
- Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (60)
- RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (4)
- SAPIENTIA - Universidade do Algarve - Portugal (3)
- Universidad Autónoma de Nuevo León, Mexico (1)
- Universidad de Alicante (1)
- Universidad del Rosario, Colombia (2)
- Universidad Politécnica de Madrid (1)
- Universidade de Lisboa - Repositório Aberto (2)
- Universidade dos Açores - Portugal (1)
- Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) (1)
- Universidade Federal do Rio Grande do Norte (UFRN) (2)
- Universitat de Girona, Spain (4)
- Universitätsbibliothek Kassel, Universität Kassel, Germany (5)
- Université de Lausanne, Switzerland (1)
- Université de Montréal, Canada (14)
- University of Michigan (2)
- University of Queensland eSpace - Australia (11)
Resumo:
The reaction of post-consumer poly(ethylene terephthalate) with aqueous solutions of sulfuric acid 7.5M was investigated in terms of temperature, time and particle size. The reaction extent reached 80% in four days at 100 degrees C and 90% in 5 hours at 135 degrees C. TPA obtained was purified and considered in the same level of quality of the commercial one after tests of elemental analysis, particle size and color. It was concluded that the hydrolysis occurred preferentially at the chain ends and superficially, having as controller mechanism the acid diffusion into the polymer structure. The shrinking-core model can explain the reaction kinetics.