Pub Date : 2018-12-01DOI: 10.17576/MJAS-2018-2206-02
Hatika Kaco, A. N. Atiqah, Sarani Zakaria, Sharifah Nabihah, Norinsan Kamil Othman, Chia ChinHua, Gan SinYee
Tannin was successfully extracted from Gelam bark using acetone as the solvent as natural alternatives. The extracted tannin was then used as corrosion inhibitor for mild steel under acidic medium. The gravimetric and electrochemical potentiodynamic corrosion tests were executed at different purified and unpurified tannin concentrations (200-800 ppm) to test the ability to inhibit mild steel corrosion. The results showed that the corrosion rate decreased as tannin concentration increased while the inhibition efficiency increased. The isotherm adsorption found that the Langmuir model was the best model to represent the interaction of tannin inhibitor and the active sites on mild steel surface. The SEM analysis showed that the mild steel morphology changed after the addition of tannin. The presence of blue-black color on the mild steel surface indicated the formation of ferric tannate to protect the surface of mild steel. In conclusion, purified tannin was a better inhibitor compared to unpurified tannin on mild steel in 1 M HCl.
{"title":"Peningkatan perencat kakisan menggunakan tanin tertulen dalam medium HCL","authors":"Hatika Kaco, A. N. Atiqah, Sarani Zakaria, Sharifah Nabihah, Norinsan Kamil Othman, Chia ChinHua, Gan SinYee","doi":"10.17576/MJAS-2018-2206-02","DOIUrl":"https://doi.org/10.17576/MJAS-2018-2206-02","url":null,"abstract":"Tannin was successfully extracted from Gelam bark using acetone as the solvent as natural alternatives. The extracted tannin was then used as corrosion inhibitor for mild steel under acidic medium. The gravimetric and electrochemical potentiodynamic corrosion tests were executed at different purified and unpurified tannin concentrations (200-800 ppm) to test the ability to inhibit mild steel corrosion. The results showed that the corrosion rate decreased as tannin concentration increased while the inhibition efficiency increased. The isotherm adsorption found that the Langmuir model was the best model to represent the interaction of tannin inhibitor and the active sites on mild steel surface. The SEM analysis showed that the mild steel morphology changed after the addition of tannin. The presence of blue-black color on the mild steel surface indicated the formation of ferric tannate to protect the surface of mild steel. In conclusion, purified tannin was a better inhibitor compared to unpurified tannin on mild steel in 1 M HCl.","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"16 1","pages":"931-942"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79852727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.17576/MJAS-2018-2206-17
Ahsanul Haque, Abu Bakar Sulong, Edy Herianto, Kee Shyuan Loh, Teuku Husaini, R. Rosli
{"title":"Pengoptimuman asid didopkan membran elektrolit polibenzimidazol untuk sel bahan api PEM suhu tinggi)","authors":"Ahsanul Haque, Abu Bakar Sulong, Edy Herianto, Kee Shyuan Loh, Teuku Husaini, R. Rosli","doi":"10.17576/MJAS-2018-2206-17","DOIUrl":"https://doi.org/10.17576/MJAS-2018-2206-17","url":null,"abstract":"","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"71 1","pages":"1065-1077"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82284701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.17576/MJAS-2018-2206-09
Farrah Diyana Zailan, Ruey Shan Chen, Sahrim Ahmad, Dalila Shahdan, A. M. Ali, Mohd Izzat Fahmi Mohd Ruf
{"title":"Adunan polimer polietilena linear berketumpatan rendah, getah asli dan polianilina: Sifat regangan dan kestabilan terma","authors":"Farrah Diyana Zailan, Ruey Shan Chen, Sahrim Ahmad, Dalila Shahdan, A. M. Ali, Mohd Izzat Fahmi Mohd Ruf","doi":"10.17576/MJAS-2018-2206-09","DOIUrl":"https://doi.org/10.17576/MJAS-2018-2206-09","url":null,"abstract":"","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"10 1","pages":"999-1006"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75216208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.17576/MJAS-2018-2206-06
N. Rashid, Zetty Izzaty Saleh, Nurul Syiffa Mahzan, Siti Nur Ain Sulaiman, Khoo Kok Siong Kok Siong, Mohd Idzat Idris, Syazwani Mohd Fadzil
{"title":"Modifikasi larut lesap bagi 238 u dan 232 th dari residu pemurnian larut lesap air (WLP))","authors":"N. Rashid, Zetty Izzaty Saleh, Nurul Syiffa Mahzan, Siti Nur Ain Sulaiman, Khoo Kok Siong Kok Siong, Mohd Idzat Idris, Syazwani Mohd Fadzil","doi":"10.17576/MJAS-2018-2206-06","DOIUrl":"https://doi.org/10.17576/MJAS-2018-2206-06","url":null,"abstract":"","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"17 1","pages":"965-972"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87148080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.17576/MJAS-2018-2206-14
Khairiah Haji Badri, Fatem Hamimie Ismail, Amira Shakim Abdul Shakir, Sharifah Mohamad, Hawa Aqilah Hamuzan, Nur Syakilla Hassan
{"title":"Membran poliuretana sebagai penjerap untuk pewarna metil oren dan etil ungu lembayung","authors":"Khairiah Haji Badri, Fatem Hamimie Ismail, Amira Shakim Abdul Shakir, Sharifah Mohamad, Hawa Aqilah Hamuzan, Nur Syakilla Hassan","doi":"10.17576/MJAS-2018-2206-14","DOIUrl":"https://doi.org/10.17576/MJAS-2018-2206-14","url":null,"abstract":"","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"26 1","pages":"1040-1047"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91093911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-04-01DOI: 10.17576/MJAS-2018-2202-21
Y. Marina, N. Aripin, Nurfatin Inani Aznan, R. Salleh
{"title":"Sifat swapenyusunan galaktosida berasaskan minyak sawit","authors":"Y. Marina, N. Aripin, Nurfatin Inani Aznan, R. Salleh","doi":"10.17576/MJAS-2018-2202-21","DOIUrl":"https://doi.org/10.17576/MJAS-2018-2202-21","url":null,"abstract":"","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"36 1","pages":"339-345"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86623243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-04-01DOI: 10.17576/MJAS-2018-2202-01
Yeong Hwang Tan, Mee Kin Chai, Ling Shing Wong
{"title":"Sebuah ulasan terhadap pelarut pengekstrakan dalam pengekstrakan mikro cecair-cecair serakan","authors":"Yeong Hwang Tan, Mee Kin Chai, Ling Shing Wong","doi":"10.17576/MJAS-2018-2202-01","DOIUrl":"https://doi.org/10.17576/MJAS-2018-2202-01","url":null,"abstract":"","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"44 1","pages":"166-174"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73817270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-04-01DOI: 10.17576/MJAS-2018-2202-19
Ahmad Nurul Farhana, Azil Bahari Alias, Norhayati Talib, Zulkifli Abd Rashid, Wan Azlina Wan Ab Karim Ghani
{"title":"Ciri-ciri gabungan biochar dari sekam padi dengan abu terbang arang batu sebagai potensi bahan penjerab","authors":"Ahmad Nurul Farhana, Azil Bahari Alias, Norhayati Talib, Zulkifli Abd Rashid, Wan Azlina Wan Ab Karim Ghani","doi":"10.17576/MJAS-2018-2202-19","DOIUrl":"https://doi.org/10.17576/MJAS-2018-2202-19","url":null,"abstract":"","PeriodicalId":22844,"journal":{"name":"The Malaysian Journal of Analytical Sciences","volume":"2 1","pages":"326-332"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85941230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}