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Tytuł:
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60Co-induced grafting of dual polymer (acrylic acid-co-HEMA) onto expanded poly(tetrafluoroethylene) membranes.
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Autorzy:
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Radzali, Nur Ain Mohd
Hidzir, Norsyahidah Mohd
Mokhtar, Abdul Khaliq
Rahman, Irman Abdul
Kok, Kuan-Ying
Ng, Yen
Zin, Muhammad Rawi Muhamed
Mahmood, Zal U'yun Wan
Ahmad, Zaiton
Idris, Faridah Mohamad
Mahmoud, Mahdi Ezwan
Sipaun, Susan Maria
Talib, Marina
Leo, Kwee-Wah
Hak, Cik Rohaida Che
Mohamed, Nor Hasimah
Murshidi, Julie Andrianny
Wee, Boon-Siong
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Temat:
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GRAFT copolymers
TETRAFLUOROETHYLENE
BIOMEDICAL materials
MONOMERS
POLYTEF
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Źródło:
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AIP Conference Proceedings; 2020, Vol. 2295 Issue 1, p1-7, 7p
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Despite its wide usage in medical applications, the hydrophobic nature of expanded polytetrafluoroethylene (ePTFE) prevents its osseointegration with surrounding tissues at the implant site, thus reduces its biocompatibility in regards as a polymeric implant. In altering the hydrophobicity property, surface modification of ePTFE with copolymer acrylic acid (AA) and 2-hydroxyethyl methacrylate (HEMA) was conducted through the utilisation of 60Co gamma irradiation as the grafting inducer. The modified ePTFE was characterised via FTIR and FESEM/EDX analyses. Post grafting process, the modified ePTFE was shown to exhibit hydrophilicity. Whereby, radiation dose of 0.5 kGy with 1.5 M total monomer concentration was determined as the optimum grafting conditions with a resulting grafting yield value of 51±4 % and water uptake of more than 100 %. The ability of modified ePTFE in having excellent percentage of water uptake is due to to the employment of dual comonomer with its desired monomer properties in relative to conventional usage of single comonomer. This study elucidates the potential of developed modified ePTFE as a novel implant material for medical applications [ABSTRACT FROM AUTHOR]
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