Oil Palm Bulletin No. 63 (November 2011) p33-42

Palm-based polyols and polyurethanes: two decades of experience

HAZIMAH Abu Hassan * , KOSHEELA DEVI, Poo Palam. * , TUAN NOOR MAZNEE TUAN iSMAIL * , MOHD. NORHISHAM Sattar * , HOONG Seng Soi * , YEONG, S.K. * , SALMIAH Ahmad + , OOI Tian Lye #

Emerging technological knowledge is leading into new ventures. One such of these is the conversion of vegetable oils to polymers to augment the use of petroleum products as the source of polymeric raw materials. Vegetable oils, such as palm oil and soyabean oil, now mainly used in the food industry, could offer alternative applications for the industry. Recent works have studied new routes for the synthesis of polymers from natural oils. These polymers are considered excellent renewable sources of raw materials for the manufacture of polyurethane (PU) components with hydroxyl groups. In addition, the transformations of double bonds of triglycerides to hydroxyls and their application in PU have been the subject of many studies. The Malaysian Palm Oil Board (MPOB) started producing polyols from palm oil in the early 1990s. However, the early methods of preparing polyols from the vegetable oils suffer from certain drawbacks. The polyols were very viscous and of high acidity. The viscosity affects process parameters during production of PU foams and the acidity would influence the overall formulation’s performance. Furthermore, many conventional methods of preparing polyols from vegetable oils do not produce polyols having a significant content of hydroxyl groups and with desirable viscosity. After gaining two decades of experience, MPOB is now in a better position to offer improved versions of palm-based polyols and they are suitable for various applications in the PU industry. This article discusses MPOB’s experiences in the past decades in exploiting biopolyols from palm oil.

Ilmu pengetahuan berasaskan teknologi akan sentiasa menerajui bidang penyelidikan ke era baru. Salah satu daripadanya ialah penggunaan minyak sayuran untuk menghasilkan polimer bagi memperluaskan sumber bahan asas polimer yang biasanya dihasilkan daripada bahan petroleum. Kini, minyak sayuran seperti minyak sawit dan minyak kacang soya yang biasanya digunakan dalam produk makanan merupakan alternative untuk mensintesis polimer daripada minyak asli berasaskan minyak sayuran. Ia dianggap sebagai sumber yang boleh diperbaharui dan terbaik untuk penghasilan komponen poliuretana (PU) dengan kehadiran kumpulan berfungsi hidroksil. Transformasi ikatan dubel dalam trigliserida kepada kumpulan berfungsi hidroksil dan penggunaannya dalam bidang PU telah menjadi tumpuan kajian masa kini. Lembaga Minyak Sawit Malaysia (MPOB) mula menerajui penghasilan poliol daripada minyak sawit pada awal tahun 1990-an. Keasidan yang tinggi boleh mempengaruhi pengeluaran poliol tersebut. Walau bagaimanapun, selepas dua dekad menimba pengalaman, kini MPOB bersedia menawarkan versi terkini poliol berasaskan sawit yang telah diperbaiki dengan pelbagai ciri-ciri yang dapat memenuhi keperluan industri PU dengan lebih meluas. Artikel ini membincangkan pengalaman MPOB selama dua dekad dalam membangunkan bio-poliol daripada minyak sawit.

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