Structure-property relationships of smectic liquid crystalline polyacrylates as revealed by SAXS
The influence of the chemical structure of the mesogenic groups and the length of the spacer groups on the phase behavior in a series of side-chain liquid crystalline polyacrylates (SCLCP) have been studied using Small Angle X-ray Scattering (SAXS) and Polarized Optical Microscopy (POM). Analyses of...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2006-01-01
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| Series: | Journal of the Brazilian Chemical Society |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000200017 |
| _version_ | 1818083627426119680 |
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| author | Pereira Fabiano V. Borsali Redouane Ritter Olga M.S. Gonçalves Paulo F. Merlo Aloir A. Silveira Nadya P. da |
| author_facet | Pereira Fabiano V. Borsali Redouane Ritter Olga M.S. Gonçalves Paulo F. Merlo Aloir A. Silveira Nadya P. da |
| author_sort | Pereira Fabiano V. |
| collection | DOAJ |
| description | The influence of the chemical structure of the mesogenic groups and the length of the spacer groups on the phase behavior in a series of side-chain liquid crystalline polyacrylates (SCLCP) have been studied using Small Angle X-ray Scattering (SAXS) and Polarized Optical Microscopy (POM). Analyses of the mesophase arrangement in unaligned and aligned samples by magnetic field are reported. The role of the spacer length on the local packing and on the thickness of the layers encountered in the SmA and SmC mesophases is elucidated. The tilt angles theta of the mesogenic cores related to the normal of the layers in the SmC mesophases are measured. A study about the degree of order as a function of temperature for the smectic polymers was possible using SAXS measurements. A particular arrangement in one of the studied SCLCPs is related to the coexistence of two different phases. |
| first_indexed | 2024-12-10T19:41:00Z |
| format | Article |
| id | doaj.art-d1127c3839a84dda868e088db0b666d5 |
| institution | Directory Open Access Journal |
| issn | 0103-5053 1678-4790 |
| language | English |
| last_indexed | 2024-12-10T19:41:00Z |
| publishDate | 2006-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Journal of the Brazilian Chemical Society |
| spelling | doaj.art-d1127c3839a84dda868e088db0b666d52022-12-22T01:35:59ZengSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society0103-50531678-47902006-01-01172333341Structure-property relationships of smectic liquid crystalline polyacrylates as revealed by SAXSPereira Fabiano V.Borsali RedouaneRitter Olga M.S.Gonçalves Paulo F.Merlo Aloir A.Silveira Nadya P. daThe influence of the chemical structure of the mesogenic groups and the length of the spacer groups on the phase behavior in a series of side-chain liquid crystalline polyacrylates (SCLCP) have been studied using Small Angle X-ray Scattering (SAXS) and Polarized Optical Microscopy (POM). Analyses of the mesophase arrangement in unaligned and aligned samples by magnetic field are reported. The role of the spacer length on the local packing and on the thickness of the layers encountered in the SmA and SmC mesophases is elucidated. The tilt angles theta of the mesogenic cores related to the normal of the layers in the SmC mesophases are measured. A study about the degree of order as a function of temperature for the smectic polymers was possible using SAXS measurements. A particular arrangement in one of the studied SCLCPs is related to the coexistence of two different phases.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000200017polyacrylatesSAXSsmectic phasemesophase behaviorliquid-crystalline polymers |
| spellingShingle | Pereira Fabiano V. Borsali Redouane Ritter Olga M.S. Gonçalves Paulo F. Merlo Aloir A. Silveira Nadya P. da Structure-property relationships of smectic liquid crystalline polyacrylates as revealed by SAXS Journal of the Brazilian Chemical Society polyacrylates SAXS smectic phase mesophase behavior liquid-crystalline polymers |
| title | Structure-property relationships of smectic liquid crystalline polyacrylates as revealed by SAXS |
| title_full | Structure-property relationships of smectic liquid crystalline polyacrylates as revealed by SAXS |
| title_fullStr | Structure-property relationships of smectic liquid crystalline polyacrylates as revealed by SAXS |
| title_full_unstemmed | Structure-property relationships of smectic liquid crystalline polyacrylates as revealed by SAXS |
| title_short | Structure-property relationships of smectic liquid crystalline polyacrylates as revealed by SAXS |
| title_sort | structure property relationships of smectic liquid crystalline polyacrylates as revealed by saxs |
| topic | polyacrylates SAXS smectic phase mesophase behavior liquid-crystalline polymers |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000200017 |
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