Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês
Nonrenewable resources, such as petroleum, are finite, and as oil reserves are about to be depleted over the next century, alternatives based on renewable sources, like biomass, must be explored to replace petrochemicals. However, it is necessary to use alternative sources that will not compete with...
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Universidade Federal de Pelotas
2021
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ftunivfpelotas:oai:repositorio.ufpel.edu.br:prefix/8063 2023-05-15T13:57:52+02:00 Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês Cellulose and nanocellulose from marine biomass and New Zealand flax Paniz, Oscar Giordani http://lattes.cnpq.br/0064685316217687 http://lattes.cnpq.br/1390205328932584 Pereira, Claudio Martin Pereira de http://lattes.cnpq.br/5722353488752184 Carreño, Neftalí Lenin Villarreal http://lattes.cnpq.br/4035574249612354 Osório, Alice Gonçalves 2021-04-14 http://guaiaca.ufpel.edu.br:8080/handle/prefix/8063 por por Universidade Federal de Pelotas Centro de Desenvolvimento Tecnológico Programa de Pós-Graduação em Ciência e Engenharia de Materiais UFPel Brasil PANIZ, Oscar Giordani. Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês. Orientadora: Alice Gonçalves Osório. 2021. 83 f. Tese - (Doutorado em Ciência e Engenharia de Materiais) – Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 2021 http://guaiaca.ufpel.edu.br:8080/handle/prefix/8063 OpenAccess Ciência e engenharia de materiais Biomassa Celulose Nanocelulose Linho neozelandês Algas Antártica Subantártica Biomateriais Acetato de celulose Biomass Cellulose Nanocellulose New Zealand flax Seaweed Antartic Subantartic Biomaterials Cellulose acetate CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA doctoralThesis 2021 ftunivfpelotas 2022-11-20T11:53:47Z Nonrenewable resources, such as petroleum, are finite, and as oil reserves are about to be depleted over the next century, alternatives based on renewable sources, like biomass, must be explored to replace petrochemicals. However, it is necessary to use alternative sources that will not compete with cropped areas. Thus, the present work explored the viability of biomasses (New Zealand flax and seaweed from the Antarctic and Sub-Antarctic regions) to obtain cellulosic material. Hence, the mentioned biomasses were ground and subjected to chemical and physical treatments (alkaline hydrolysis (NaOH 5% w/v), bleaching (NaClO2) and sonication) to obtain cellulosic material. The feasibility to converting cellulosic materials into nanocellulose through an acid hydrolysis and cellulose acetate by esterification reaction was also evaluated. The obtained materials were chemically characterized, according to Technical Association of the Pulp and Paper Industry standards (Tappi), by Fourier transform infrared spectroscopy, and by carbon 13 nuclear magnetic resonance spectroscopy; physically characterized by zeta potential, thermogravimetry and differential scanning calorimetry; morphologically characterized by optical microscopy, scanning electronics microscopy, Field Emission Scanning Electron Microscopy and transmission electron microscopy. In addition, the materials were characterized by X-ray diffraction and cell viability according to ISO 10.993-5. As result, cellulose nanofiber like-sponge morphology was produced from the algae Cystosphaera jacquinotti, without acid hydrolysis. The material being an excellent substrate for cell proliferation. Cellulosic material like-sponge morphology was produced from Anhfeltia plicata. In addition, New Zealand flax was an excellent source of cellulose, presenting a high yield and can be used to produce cellulose nanofibers, by acid hydrolysis and cellulose acetate by esterification. Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul - FAPERGS Coordenação de ... Doctoral or Postdoctoral Thesis Antarc* Antarctic antartic* Antártica Repositório Institucional da UFPEL (Universidade Federal de Pelotas) Antarctic New Zealand The Antarctic |
institution |
Open Polar |
collection |
Repositório Institucional da UFPEL (Universidade Federal de Pelotas) |
op_collection_id |
ftunivfpelotas |
language |
Portuguese |
topic |
Ciência e engenharia de materiais Biomassa Celulose Nanocelulose Linho neozelandês Algas Antártica Subantártica Biomateriais Acetato de celulose Biomass Cellulose Nanocellulose New Zealand flax Seaweed Antartic Subantartic Biomaterials Cellulose acetate CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
spellingShingle |
Ciência e engenharia de materiais Biomassa Celulose Nanocelulose Linho neozelandês Algas Antártica Subantártica Biomateriais Acetato de celulose Biomass Cellulose Nanocellulose New Zealand flax Seaweed Antartic Subantartic Biomaterials Cellulose acetate CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA Paniz, Oscar Giordani Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês |
topic_facet |
Ciência e engenharia de materiais Biomassa Celulose Nanocelulose Linho neozelandês Algas Antártica Subantártica Biomateriais Acetato de celulose Biomass Cellulose Nanocellulose New Zealand flax Seaweed Antartic Subantartic Biomaterials Cellulose acetate CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
description |
Nonrenewable resources, such as petroleum, are finite, and as oil reserves are about to be depleted over the next century, alternatives based on renewable sources, like biomass, must be explored to replace petrochemicals. However, it is necessary to use alternative sources that will not compete with cropped areas. Thus, the present work explored the viability of biomasses (New Zealand flax and seaweed from the Antarctic and Sub-Antarctic regions) to obtain cellulosic material. Hence, the mentioned biomasses were ground and subjected to chemical and physical treatments (alkaline hydrolysis (NaOH 5% w/v), bleaching (NaClO2) and sonication) to obtain cellulosic material. The feasibility to converting cellulosic materials into nanocellulose through an acid hydrolysis and cellulose acetate by esterification reaction was also evaluated. The obtained materials were chemically characterized, according to Technical Association of the Pulp and Paper Industry standards (Tappi), by Fourier transform infrared spectroscopy, and by carbon 13 nuclear magnetic resonance spectroscopy; physically characterized by zeta potential, thermogravimetry and differential scanning calorimetry; morphologically characterized by optical microscopy, scanning electronics microscopy, Field Emission Scanning Electron Microscopy and transmission electron microscopy. In addition, the materials were characterized by X-ray diffraction and cell viability according to ISO 10.993-5. As result, cellulose nanofiber like-sponge morphology was produced from the algae Cystosphaera jacquinotti, without acid hydrolysis. The material being an excellent substrate for cell proliferation. Cellulosic material like-sponge morphology was produced from Anhfeltia plicata. In addition, New Zealand flax was an excellent source of cellulose, presenting a high yield and can be used to produce cellulose nanofibers, by acid hydrolysis and cellulose acetate by esterification. Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul - FAPERGS Coordenação de ... |
author2 |
http://lattes.cnpq.br/0064685316217687 http://lattes.cnpq.br/1390205328932584 Pereira, Claudio Martin Pereira de http://lattes.cnpq.br/5722353488752184 Carreño, Neftalí Lenin Villarreal http://lattes.cnpq.br/4035574249612354 Osório, Alice Gonçalves |
format |
Doctoral or Postdoctoral Thesis |
author |
Paniz, Oscar Giordani |
author_facet |
Paniz, Oscar Giordani |
author_sort |
Paniz, Oscar Giordani |
title |
Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês |
title_short |
Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês |
title_full |
Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês |
title_fullStr |
Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês |
title_full_unstemmed |
Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês |
title_sort |
obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês |
publisher |
Universidade Federal de Pelotas |
publishDate |
2021 |
url |
http://guaiaca.ufpel.edu.br:8080/handle/prefix/8063 |
geographic |
Antarctic New Zealand The Antarctic |
geographic_facet |
Antarctic New Zealand The Antarctic |
genre |
Antarc* Antarctic antartic* Antártica |
genre_facet |
Antarc* Antarctic antartic* Antártica |
op_relation |
PANIZ, Oscar Giordani. Obtenção de celulose e nanocelulose a partir de biomassas marinhas e linho neozelandês. Orientadora: Alice Gonçalves Osório. 2021. 83 f. Tese - (Doutorado em Ciência e Engenharia de Materiais) – Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 2021 http://guaiaca.ufpel.edu.br:8080/handle/prefix/8063 |
op_rights |
OpenAccess |
_version_ |
1766265793576697856 |