Changes in friction, surface roughness, and tensile strength upon compaction of Ficus deltoidea powder
The study is concerned with the quantitative measurement of changes in friction, surface roughness, and tensile strength during the compaction of Ficus deltoidea powder, a well-known Malaysian herb. In the compaction process, the force applied for compaction (upper punch) was greatly influenced by t...
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| Format: | Article |
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Science Society of Thailand
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/28726/ |
| _version_ | 1848846196199653376 |
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| author | Ooi, T. C. Yusof, Yus Aniza Chin, Nyuk Ling A. Talib, Rosnita Othman, Siti Hajar Aziz, M. G. |
| author_facet | Ooi, T. C. Yusof, Yus Aniza Chin, Nyuk Ling A. Talib, Rosnita Othman, Siti Hajar Aziz, M. G. |
| author_sort | Ooi, T. C. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The study is concerned with the quantitative measurement of changes in friction, surface roughness, and tensile strength during the compaction of Ficus deltoidea powder, a well-known Malaysian herb. In the compaction process, the force applied for compaction (upper punch) was greatly influenced by the friction between die wall and powder bed during transmission to the lower punch. Wall friction was found to increase with the increasing load and weight of powder due to an increase in surface contact with the die wall. The coefficients of wall friction decreased from 0.47 to 0.36 for increasing weight of powder from 0.8–1.5 g. Tablets with a higher compaction load of 9.5 kN had a lower arithmetic mean deviation (Ra), an indicator of surface roughness. Ra for the top surface is lower than that of for the bottom surface. |
| first_indexed | 2025-11-15T08:58:52Z |
| format | Article |
| id | upm-28726 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T08:58:52Z |
| publishDate | 2013 |
| publisher | Science Society of Thailand |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-287262015-07-25T02:22:11Z http://psasir.upm.edu.my/id/eprint/28726/ Changes in friction, surface roughness, and tensile strength upon compaction of Ficus deltoidea powder Ooi, T. C. Yusof, Yus Aniza Chin, Nyuk Ling A. Talib, Rosnita Othman, Siti Hajar Aziz, M. G. The study is concerned with the quantitative measurement of changes in friction, surface roughness, and tensile strength during the compaction of Ficus deltoidea powder, a well-known Malaysian herb. In the compaction process, the force applied for compaction (upper punch) was greatly influenced by the friction between die wall and powder bed during transmission to the lower punch. Wall friction was found to increase with the increasing load and weight of powder due to an increase in surface contact with the die wall. The coefficients of wall friction decreased from 0.47 to 0.36 for increasing weight of powder from 0.8–1.5 g. Tablets with a higher compaction load of 9.5 kN had a lower arithmetic mean deviation (Ra), an indicator of surface roughness. Ra for the top surface is lower than that of for the bottom surface. Science Society of Thailand 2013 Article PeerReviewed Ooi, T. C. and Yusof, Yus Aniza and Chin, Nyuk Ling and A. Talib, Rosnita and Othman, Siti Hajar and Aziz, M. G. (2013) Changes in friction, surface roughness, and tensile strength upon compaction of Ficus deltoidea powder. ScienceAsia, 39 (5). pp. 520-526. ISSN 1513-1874 http://www.scienceasia.org/content/viewabstract.php?ms=3658&v=26 10.2306/scienceasia1513-1874.2013.39.520 |
| spellingShingle | Ooi, T. C. Yusof, Yus Aniza Chin, Nyuk Ling A. Talib, Rosnita Othman, Siti Hajar Aziz, M. G. Changes in friction, surface roughness, and tensile strength upon compaction of Ficus deltoidea powder |
| title | Changes in friction, surface roughness, and tensile strength upon compaction of Ficus deltoidea powder |
| title_full | Changes in friction, surface roughness, and tensile strength upon compaction of Ficus deltoidea powder |
| title_fullStr | Changes in friction, surface roughness, and tensile strength upon compaction of Ficus deltoidea powder |
| title_full_unstemmed | Changes in friction, surface roughness, and tensile strength upon compaction of Ficus deltoidea powder |
| title_short | Changes in friction, surface roughness, and tensile strength upon compaction of Ficus deltoidea powder |
| title_sort | changes in friction, surface roughness, and tensile strength upon compaction of ficus deltoidea powder |
| url | http://psasir.upm.edu.my/id/eprint/28726/ http://psasir.upm.edu.my/id/eprint/28726/ http://psasir.upm.edu.my/id/eprint/28726/ |