Malaysian Journal of Analytical Sciences Vol 19 No 1 (2015): 163 – 172

 

 

 

PHOTOGRAFTING OF POLYACRYLAMIDE HYDROGEL COATING ONTO VARIOUS POLYETHYLENE TEREPHTHALATE TEXTILES

 

(Pencantuman Melalui Pencahayaan Salutan Hidrogel Poliakrilamida ke atas Pelbagai Jenis Tekstil Polietilena Tereftalat)

Nurul Hazlina Naemuddin¹, Siti Samahani Suradi¹, Jamarosliza Jamaluddin^1,2, Nadia Adrus^1,2*

 

¹Department of Polymer Engineering,

²Biopolymer Research Group, Department of Polymer Engineering,

Faculty of Chemical Engineering,

Universiti Teknologi Malaysia, 81000 Skudai, Johor, Malaysia

 

*Corresponding author: nadia@cheme.utm.my

 

 

Abstract

In this paper, polyacrylamide (PAAm) hydrogels grafted via photopolymerization onto various types of polyethylene terephthalate (PET) as matrix were designed and synthesized. The investigation was carried out based on thickness (0.02 -0.07 mm) of nonwoven PET textiles from various resources as well as commercial PET membrane. In this study, PET matrices with a disk shape of 4.5 cm in diameter were coated with thin hydrogel using UVA photopolymerization system. The resulting grafted PAAm-g-PET was examined through degree of grafting (DG) and characterized by using Fourier Transformed Infrared Spectroscopy (FTIR). The DG above 50 % results showed the ability of PAAm hydrogel to be grafted onto PET. The various range of thickness and surface of PET also gave an impact onto the performance of grafting of PAAm onto PET. FTIR results also confirmed the addition of amide group after grafting process (1720 cm^-1, 1100 cm^-1, 850 cm^-1). The hydrophilicity of hydrogels was reported to impart oil fouling resistance. We expect that grafted hydrogel layer has fascinating future for oil/water separation.

 

Keywords:  polyacrylamide (PAAm), hydrogel, polyethylene terephthalate (PET), Fourier Transformed Infrared Spectroscopy (FTIR)

 

Abstrak

Dalam kertas ini, hidrogel poliakrilamida (PAAm) dicantumkan pada beberapa jenis polietilena tereftalat (PET) sebagai matriks dengan menggunakan teknik pempolimeran cahaya telah direka dan disintesis. Kajian ini telah dilaksanakan berdasarkan ketebalan (0.02-0.07 mm) tekstil PET bukan tenunan daripada pelbagai sumber yang berbeza dan juga membran PET komersial. Melalui kajian ini, tekstil PET dipotong dalam bentuk cakera yang berdiameter 4.5 cm telah disaluti dengan lapisan hidrogel yang nipis menggunakan sistem pempolimeran cahaya UVA. Hasil cantuman PAAm-g-PET dianalisis melalui darjah cantuman (DG) dan dicirikan menggunakan spektroskopi inframerah transformasi Fourier (FTIR). Hasil 50 % DG dan ke atas dapat membuktikan keupayaan sifat hidrogel PAAm yang dicantumkan dengan PET. Ketebalan dan permukaan PET yang berbeza turut memberi kesan terhadap kebolehupayaan cantuman antara PAAm dan PET. Keputusan FTIR juga mengesahkan penambahan kumpulan amida selepas proses cantuman (1720 cm^-1, 1100 cm^-1, 850 cm^-1). Sifat hidrofilik hidrogel dilaporkan memberikan rintangan terhadap kotoran minyak. Kami menjangkakan bahawa lapisan hidrogel yang dicantumkan mempunyai masa depan yang baik dan menarik untuk pengasingan minyak/air.

 

Kata kunci: poliakrilamida (PAAm), hidrogel, polietilena tereftalat (PET), Spektroskopi Inframerah Transformasi Fourier (FTIR)

 

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