A modulated differential scanning calorimetry and small-angle x-ray scattering study of the interfacial region in structured latices
The interfacial structure of poly(styrene) (PS)-poly(methyl acrylate) (PMA) structured latices has been investigated by means of modulated-temperature differential scanning calorimetry (M-TDSC) and small-angle x-ray scattering (SAXS). The differential of heat capacity, dCp/dT, signal from M-TDSC was...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2001-01-01
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| Series: | Journal of the Brazilian Chemical Society |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000100012 |
| _version_ | 1818515250338594816 |
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| author | Hourston Douglas J. Song Mo Pang Yongxin |
| author_facet | Hourston Douglas J. Song Mo Pang Yongxin |
| author_sort | Hourston Douglas J. |
| collection | DOAJ |
| description | The interfacial structure of poly(styrene) (PS)-poly(methyl acrylate) (PMA) structured latices has been investigated by means of modulated-temperature differential scanning calorimetry (M-TDSC) and small-angle x-ray scattering (SAXS). The differential of heat capacity, dCp/dT, signal from M-TDSC was used to quantify the weight fraction of interface in these latices. For PS-PMA (50:50 by weight) structured latices in which the PS component had different crosslink densities (0, 1, 3, 5 and 10 mol% of crosslinking agent), the weight fraction of interface was about 13%. With increasing crosslink density, the fraction of interface increased only slightly. A core-shell model has been used to analyse SAXS data for these PS-PMA latices. M-TDSC can only provide information about the weight fraction of interface, but the combination of M-TDSC and SAXS can provide much more information on the morphology of such structured latices. |
| first_indexed | 2024-12-11T00:26:35Z |
| format | Article |
| id | doaj.art-dcd2899364e341f9b17aeb92fa9b9ae2 |
| institution | Directory Open Access Journal |
| issn | 0103-5053 |
| language | English |
| last_indexed | 2024-12-11T00:26:35Z |
| publishDate | 2001-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Journal of the Brazilian Chemical Society |
| spelling | doaj.art-dcd2899364e341f9b17aeb92fa9b9ae22022-12-22T01:27:33ZengSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society0103-50532001-01-011218792A modulated differential scanning calorimetry and small-angle x-ray scattering study of the interfacial region in structured laticesHourston Douglas J.Song MoPang YongxinThe interfacial structure of poly(styrene) (PS)-poly(methyl acrylate) (PMA) structured latices has been investigated by means of modulated-temperature differential scanning calorimetry (M-TDSC) and small-angle x-ray scattering (SAXS). The differential of heat capacity, dCp/dT, signal from M-TDSC was used to quantify the weight fraction of interface in these latices. For PS-PMA (50:50 by weight) structured latices in which the PS component had different crosslink densities (0, 1, 3, 5 and 10 mol% of crosslinking agent), the weight fraction of interface was about 13%. With increasing crosslink density, the fraction of interface increased only slightly. A core-shell model has been used to analyse SAXS data for these PS-PMA latices. M-TDSC can only provide information about the weight fraction of interface, but the combination of M-TDSC and SAXS can provide much more information on the morphology of such structured latices.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000100012Latexsmall-angle x-ray scatteringinterfacemodulated DSC |
| spellingShingle | Hourston Douglas J. Song Mo Pang Yongxin A modulated differential scanning calorimetry and small-angle x-ray scattering study of the interfacial region in structured latices Journal of the Brazilian Chemical Society Latex small-angle x-ray scattering interface modulated DSC |
| title | A modulated differential scanning calorimetry and small-angle x-ray scattering study of the interfacial region in structured latices |
| title_full | A modulated differential scanning calorimetry and small-angle x-ray scattering study of the interfacial region in structured latices |
| title_fullStr | A modulated differential scanning calorimetry and small-angle x-ray scattering study of the interfacial region in structured latices |
| title_full_unstemmed | A modulated differential scanning calorimetry and small-angle x-ray scattering study of the interfacial region in structured latices |
| title_short | A modulated differential scanning calorimetry and small-angle x-ray scattering study of the interfacial region in structured latices |
| title_sort | modulated differential scanning calorimetry and small angle x ray scattering study of the interfacial region in structured latices |
| topic | Latex small-angle x-ray scattering interface modulated DSC |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532001000100012 |
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