Structure-property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes
Understanding on the structure-property relationship between raw materials and the resultant polyurethane (PU) products is very crucial, especially for PU formulators. PU formulation is a trade secret, therefore, in development of PU products for specific target applications and performances, ski...
| Главный автор: | |
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| Формат: | Диссертация |
| Язык: | English |
| Опубликовано: |
2019
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| Предметы: | |
| Online-ссылка: | http://psasir.upm.edu.my/id/eprint/83720/1/FS%202019%2040%20-%20ir.pdf |
| _version_ | 1825951790044020736 |
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| author | Tuan Ismail, Tuan Noor Maznee |
| author_facet | Tuan Ismail, Tuan Noor Maznee |
| author_sort | Tuan Ismail, Tuan Noor Maznee |
| collection | UPM |
| description | Understanding on the structure-property relationship between raw materials
and the resultant polyurethane (PU) products is very crucial, especially for PU
formulators. PU formulation is a trade secret, therefore, in development of PU
products for specific target applications and performances, skill and expertise
are required. To gain these skill and expertise, a lot of formulations need to be
done which definitely involve cost and very time-consuming. However, these
problems can be minimized with an availability of a systematic study on
structure-property relationship between raw materials and their resultant PU
products. Therefore, a systematic study on structure-property relationship of
polyester and palm oil-based polyols in solid polyurethanes (SPUs) were
conducted. SPUs made from polyester and palm oil-based polyols were
characterized in terms of physico-mechanical and thermal properties as well as
their morphologies. It was found that, in azelate polyols, resilience and
durability of SPUs can be optimized by selecting azelate polyols with odd
carbon number in the linear diols and by using shorter chain linear diols. In 1,4-
butanediol-based polyester polyols, these properties can also be achieved by
selecting polyester polyols from dicarboxylic acids (n-DCAs) with odd carbon
numbers. It was also found that, the SPUs with maximized material strengths
can be obtained from polyester polyols with even carbon numbers in both linear
diols and n-DCAs. Phase interaction through formation of hydrogen bondings
was the contributing factor to the properties of SPUs observed. For SPUs
made from palm olein-based polyols, there were no significant changes in
properties of SPUs observed, with regards to different types of reactants used
during ring-opening reaction of epoxide groups. Thus, the findings could
provide a guidance to PU formulators to choose the right raw materials to be
used in their formulations. Through suitable choice of raw materials, a huge
range of PU products could be made. Therefore, the findings from this study could have practical significance in the selection and synthesis of polyester and
palm oil-based polyols for PU applications. |
| first_indexed | 2024-03-06T10:35:16Z |
| format | Thesis |
| id | upm.eprints-83720 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:35:16Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | upm.eprints-837202022-01-05T02:36:30Z http://psasir.upm.edu.my/id/eprint/83720/ Structure-property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes Tuan Ismail, Tuan Noor Maznee Understanding on the structure-property relationship between raw materials and the resultant polyurethane (PU) products is very crucial, especially for PU formulators. PU formulation is a trade secret, therefore, in development of PU products for specific target applications and performances, skill and expertise are required. To gain these skill and expertise, a lot of formulations need to be done which definitely involve cost and very time-consuming. However, these problems can be minimized with an availability of a systematic study on structure-property relationship between raw materials and their resultant PU products. Therefore, a systematic study on structure-property relationship of polyester and palm oil-based polyols in solid polyurethanes (SPUs) were conducted. SPUs made from polyester and palm oil-based polyols were characterized in terms of physico-mechanical and thermal properties as well as their morphologies. It was found that, in azelate polyols, resilience and durability of SPUs can be optimized by selecting azelate polyols with odd carbon number in the linear diols and by using shorter chain linear diols. In 1,4- butanediol-based polyester polyols, these properties can also be achieved by selecting polyester polyols from dicarboxylic acids (n-DCAs) with odd carbon numbers. It was also found that, the SPUs with maximized material strengths can be obtained from polyester polyols with even carbon numbers in both linear diols and n-DCAs. Phase interaction through formation of hydrogen bondings was the contributing factor to the properties of SPUs observed. For SPUs made from palm olein-based polyols, there were no significant changes in properties of SPUs observed, with regards to different types of reactants used during ring-opening reaction of epoxide groups. Thus, the findings could provide a guidance to PU formulators to choose the right raw materials to be used in their formulations. Through suitable choice of raw materials, a huge range of PU products could be made. Therefore, the findings from this study could have practical significance in the selection and synthesis of polyester and palm oil-based polyols for PU applications. 2019-04 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/83720/1/FS%202019%2040%20-%20ir.pdf Tuan Ismail, Tuan Noor Maznee (2019) Structure-property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes. Doctoral thesis, Universiti Putra Malaysia. Chemistry, Technical - Research Polyesters Polyurethanes |
| spellingShingle | Chemistry, Technical - Research Polyesters Polyurethanes Tuan Ismail, Tuan Noor Maznee Structure-property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes |
| title | Structure-property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes |
| title_full | Structure-property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes |
| title_fullStr | Structure-property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes |
| title_full_unstemmed | Structure-property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes |
| title_short | Structure-property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes |
| title_sort | structure property relationship of polyester and palm oil polyols and their evaluation in solid polyurethanes |
| topic | Chemistry, Technical - Research Polyesters Polyurethanes |
| url | http://psasir.upm.edu.my/id/eprint/83720/1/FS%202019%2040%20-%20ir.pdf |
| work_keys_str_mv | AT tuanismailtuannoormaznee structurepropertyrelationshipofpolyesterandpalmoilpolyolsandtheirevaluationinsolidpolyurethanes |