Publicação
Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media
| Resumo: | Hypothesis: The possibility of tailoring the final properties of environmentally friendly waterborne polyurethane and polyurethane-urea dispersions and the films they produce makes them attractive for a wide range of applications. Both the reagents content and the synthesis route contribute to the observed final properties. Experiments: A series of polyurethane-urea and polyurethane aqueous dispersions were synthesized using 1,2-ethanediamine and/or 1,4-butanediol as chain extenders. The diamine content was varied from 0 to 4.5 wt%. Its addition was carried out either by the classical heterogeneous reaction medium (after phase inversion step), or else by the alternative homogeneous medium (prior to dispersion formation). Dispersions as well as films prepared from dispersions have been later extensively characterized. Findings: 1,2-Ethanediamine addition in heterogeneous medium leads to dispersions with high particle sizes and broad distributions whereas in homogeneous medium, lower particle sizes and narrow distributions were observed, thus leading to higher uniformity and cohesiveness among particles during film formation. Thereby, stress transfer is favored adding the diamine in a homogeneous medium; and thus the obtained films presented quite higher stress and modulus values. Furthermore, the higher uniformity of films tends to hinder water molecules transport through the film, resulting, in general, in a lower water absorption capacity. |
|---|---|
| Autores principais: | Santamaria-Echart, Arantzazu |
| Outros Autores: | Fernandes, Isabel P.; Saralegi, Ainara; Costa, Mário Rui; Barreiro, M.F.; Corcuera, Maria Angeles; Eceiza, Arantaxa |
| Assunto: | Waterborne polyurethane-ureas 1,2-Ethanediamine Homogeneous medium reaction Heterogeneous medium reaction Particle size distribution Mechanical behavior |
| Ano: | 2016 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Instituto Politécnico de Bragança |
| Idioma: | inglês |
| Origem: | Biblioteca Digital do IPB |
| _version_ | 1867172952064131072 |
|---|---|
| author | Santamaria-Echart, Arantzazu |
| author2 | Fernandes, Isabel P. Saralegi, Ainara Costa, Mário Rui Barreiro, M.F. Corcuera, Maria Angeles Eceiza, Arantaxa |
| author2_role | author author author author author author |
| author_facet | Santamaria-Echart, Arantzazu Fernandes, Isabel P. Saralegi, Ainara Costa, Mário Rui Barreiro, M.F. Corcuera, Maria Angeles Eceiza, Arantaxa |
| author_role | author |
| contributor_name_str_mv | Biblioteca Digital do IPB |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Santamaria-Echart, Arantzazu\",\"Person.identifier.orcid\":\"0000-0003-0107-7301\"},{\"Person.name\":\"Fernandes, Isabel P.\",\"Person.identifier.orcid\":\"0000-0002-0069-4503\"},{\"Person.name\":\"Saralegi, Ainara\"},{\"Person.name\":\"Costa, Mário Rui\"},{\"Person.name\":\"Barreiro, M.F.\",\"Person.identifier.orcid\":\"0000-0002-6844-333X\"},{\"Person.name\":\"Corcuera, Maria Angeles\"},{\"Person.name\":\"Eceiza, Arantaxa\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Biblioteca Digital do IPB |
| datacite.creators.creator.creatorName.fl_str_mv | Santamaria-Echart, Arantzazu Fernandes, Isabel P. Saralegi, Ainara Costa, Mário Rui Barreiro, M.F. Corcuera, Maria Angeles Eceiza, Arantaxa |
| datacite.date.Accepted.fl_str_mv | 2016-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2016-10-27T10:25:16Z |
| datacite.date.embargoed.fl_str_mv | 2016-10-27T10:25:16Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Waterborne polyurethane-ureas 1,2-Ethanediamine Homogeneous medium reaction Heterogeneous medium reaction Particle size distribution Mechanical behavior |
| datacite.titles.title.fl_str_mv | Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media |
| dc.contributor.none.fl_str_mv | Biblioteca Digital do IPB |
| dc.creator.none.fl_str_mv | Santamaria-Echart, Arantzazu Fernandes, Isabel P. Saralegi, Ainara Costa, Mário Rui Barreiro, M.F. Corcuera, Maria Angeles Eceiza, Arantaxa |
| dc.date.Accepted.fl_str_mv | 2016-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2016-10-27T10:25:16Z |
| dc.date.embargoed.fl_str_mv | 2016-10-27T10:25:16Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10198/13434 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Waterborne polyurethane-ureas 1,2-Ethanediamine Homogeneous medium reaction Heterogeneous medium reaction Particle size distribution Mechanical behavior |
| dc.title.fl_str_mv | Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Hypothesis: The possibility of tailoring the final properties of environmentally friendly waterborne polyurethane and polyurethane-urea dispersions and the films they produce makes them attractive for a wide range of applications. Both the reagents content and the synthesis route contribute to the observed final properties. Experiments: A series of polyurethane-urea and polyurethane aqueous dispersions were synthesized using 1,2-ethanediamine and/or 1,4-butanediol as chain extenders. The diamine content was varied from 0 to 4.5 wt%. Its addition was carried out either by the classical heterogeneous reaction medium (after phase inversion step), or else by the alternative homogeneous medium (prior to dispersion formation). Dispersions as well as films prepared from dispersions have been later extensively characterized. Findings: 1,2-Ethanediamine addition in heterogeneous medium leads to dispersions with high particle sizes and broad distributions whereas in homogeneous medium, lower particle sizes and narrow distributions were observed, thus leading to higher uniformity and cohesiveness among particles during film formation. Thereby, stress transfer is favored adding the diamine in a homogeneous medium; and thus the obtained films presented quite higher stress and modulus values. Furthermore, the higher uniformity of films tends to hinder water molecules transport through the film, resulting, in general, in a lower water absorption capacity. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| fulltext.url.fl_str_mv | https://bibliotecadigital.ipb.pt/bitstreams/f6ac63a9-33cc-40bf-a2e7-e467f19f8cc8/download |
| id | ipb_be625f87fc1cab9d3f89abdbcdbd2820 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10198/13434 |
| instacron_str | ipb |
| institution | Instituto Politécnico de Bragança |
| instname_str | Instituto Politécnico de Bragança |
| language | eng |
| network_acronym_str | ipb |
| network_name_str | Biblioteca Digital do IPB |
| oai_identifier_str | oai:bibliotecadigital.ipb.pt:10198/13434 |
| organization_str_mv | urn:organizationAcronym:ipb |
| person_str_mv | Santamaria-Echart, Arantzazu Santamaria-Echart, Arantzazu https://www.ciencia-id.pt/0C17-1E1F-2621 0C17-1E1F-2621 http://orcid.org/0000-0003-0107-7301 0000-0003-0107-7301 Fernandes, Isabel P. Fernandes, Isabel P. https://www.ciencia-id.pt/4D1C-441F-C7F0 4D1C-441F-C7F0 http://orcid.org/0000-0002-0069-4503 0000-0002-0069-4503 Saralegi, Ainara Costa, Mário Rui Barreiro, M.F. Barreiro, M.F. https://www.ciencia-id.pt/3418-47D5-5746 3418-47D5-5746 http://orcid.org/0000-0002-6844-333X 0000-0002-6844-333X Corcuera, Maria Angeles Eceiza, Arantaxa |
| publishDate | 2016 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | Biblioteca Digital do IPB |
| repository_id_str | urn:repositoryAcronym:ipb |
| service_str_mv | urn:repositoryAcronym:ipb |
| spelling | engElsevierpt_PTHypothesis: The possibility of tailoring the final properties of environmentally friendly waterborne polyurethane and polyurethane-urea dispersions and the films they produce makes them attractive for a wide range of applications. Both the reagents content and the synthesis route contribute to the observed final properties. Experiments: A series of polyurethane-urea and polyurethane aqueous dispersions were synthesized using 1,2-ethanediamine and/or 1,4-butanediol as chain extenders. The diamine content was varied from 0 to 4.5 wt%. Its addition was carried out either by the classical heterogeneous reaction medium (after phase inversion step), or else by the alternative homogeneous medium (prior to dispersion formation). Dispersions as well as films prepared from dispersions have been later extensively characterized. Findings: 1,2-Ethanediamine addition in heterogeneous medium leads to dispersions with high particle sizes and broad distributions whereas in homogeneous medium, lower particle sizes and narrow distributions were observed, thus leading to higher uniformity and cohesiveness among particles during film formation. Thereby, stress transfer is favored adding the diamine in a homogeneous medium; and thus the obtained films presented quite higher stress and modulus values. Furthermore, the higher uniformity of films tends to hinder water molecules transport through the film, resulting, in general, in a lower water absorption capacity.application/pdfpt_PTSynthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous mediaPersonalSantamaria-Echart, ArantzazuDSpacehttp://dspace.org/items/eb945e05-928f-45cb-ac27-04b4159ae31aDSpacehttp://dspace.org/items/eb945e05-928f-45cb-ac27-04b4159ae31aSantamaria-EchartArantzazuCiência IDhttps://www.ciencia-id.pt0C17-1E1F-2621ORCIDhttp://orcid.org0000-0003-0107-7301Scopus Author IDhttps://www.scopus.com56725697700PersonalFernandes, Isabel P.DSpacehttp://dspace.org/items/aa1919bb-c35d-4abb-a137-10d998ad4ecaDSpacehttp://dspace.org/items/aa1919bb-c35d-4abb-a137-10d998ad4ecaFernandesIsabel P.Ciência IDhttps://www.ciencia-id.pt4D1C-441F-C7F0ORCIDhttp://orcid.org0000-0002-0069-4503Researcher IDhttps://www.researcherid.comL-1552-2016Scopus Author IDhttps://www.scopus.com26323585300Saralegi, AinaraCosta, Mário RuiPersonalBarreiro, M.F.DSpacehttp://dspace.org/items/0391987c-ba90-488b-839a-153447ce1f0fDSpacehttp://dspace.org/items/0391987c-ba90-488b-839a-153447ce1f0fBarreiroFilomenaCiência IDhttps://www.ciencia-id.pt3418-47D5-5746ORCIDhttp://orcid.org0000-0002-6844-333XResearcher IDhttps://www.researcherid.comL-9802-2014Scopus Author IDhttps://www.scopus.com57188719717Corcuera, Maria AngelesEceiza, ArantaxaHostingInstitutionOrganizationalBiblioteca Digital do IPBe-mailmailto:dspace@ipb.ptdspace@ipb.ptISSNIsPartOf0021-9797DOIIsPartOf10.1016/j.jcis.2016.05.0162016-10-27T10:25:16Z20162016-01-01T00:00:00ZHandlehttp://hdl.handle.net/10198/13434http://purl.org/coar/access_right/c_16ecrestricted accessWaterborne polyurethane-ureas1,2-EthanediamineHomogeneous medium reactionHeterogeneous medium reactionParticle size distributionMechanical behavior2862137 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal article2016http://creativecommons.org/licenses/by/4.0/http://purl.org/coar/access_right/c_16ecapplication/pdffulltexthttps://bibliotecadigital.ipb.pt/bitstreams/f6ac63a9-33cc-40bf-a2e7-e467f19f8cc8/downloadJournal of Colloid and Interface Science476184192 |
| spellingShingle | Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media Santamaria-Echart, Arantzazu Waterborne polyurethane-ureas 1,2-Ethanediamine Homogeneous medium reaction Heterogeneous medium reaction Particle size distribution Mechanical behavior |
| status | SINGLETON |
| subject.fl_str_mv | Waterborne polyurethane-ureas 1,2-Ethanediamine Homogeneous medium reaction Heterogeneous medium reaction Particle size distribution Mechanical behavior |
| title | Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media |
| title_full | Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media |
| title_fullStr | Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media |
| title_full_unstemmed | Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media |
| title_short | Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media |
| title_sort | Synthesis of waterborne polyurethane-urea dispersions with chain extension step in homogeneous and heterogeneous media |
| topic | Waterborne polyurethane-ureas 1,2-Ethanediamine Homogeneous medium reaction Heterogeneous medium reaction Particle size distribution Mechanical behavior |
| topic_facet | Waterborne polyurethane-ureas 1,2-Ethanediamine Homogeneous medium reaction Heterogeneous medium reaction Particle size distribution Mechanical behavior |
| url | http://hdl.handle.net/10198/13434 |
| visible | 1 |