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Characterisation Of A Novel Synthesised Disulphide Cross-Linked Polymer And Mechanism Of Degradation

หน่วยงาน Universiti Sains Malaysia, Malaysia

รายละเอียด

ชื่อเรื่อง : Characterisation Of A Novel Synthesised Disulphide Cross-Linked Polymer And Mechanism Of Degradation
นักวิจัย : Lau , Yong Khee , Lim, Vuanghao , Asmawi, Mohd Zaini , Peh, Kok Khiang , Abdul Karim Khan, Nurzalina
คำค้น : RK1-715 Dentistry
หน่วยงาน : Universiti Sains Malaysia, Malaysia
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Lim, Vuanghao and Asmawi, Mohd Zaini and Peh, Kok Khiang and Abdul Karim Khan, Nurzalina and Lau , Yong Khee (2014) Characterisation Of A Novel Synthesised Disulphide Cross-Linked Polymer And Mechanism Of Degradation. Project Report. Universiti Sains Malaysia.
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : http://eprints.usm.my/31050/
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The aim of this work was to synthesise tricarballylic acid based trithiol monomer for polymerisation into branch-chained disulphide polymers. The monomer was synthesised by amide coupling reaction between tricarballylic acid and (triphenylmethyl) thioethylamine by using two synthesis steps. The monomer was deprotected using trifluoroacetic acid and triethylsilane to expose the thiol atoms in preparation for further polymerisation. White powdery solid was obtained with yield around 20-25%. Spectroscopic and CHNS elemental analysis results complemented with the desired monomer. FT-IR showed the presence of amide peaks and supported by the mass analysis using LC-MS. The disulphide cross-linked polymer was synthesised through air oxidation method, comprised of different molar ratios of N,N',N''-tris(2-sulfanylethyl)propane-I,2,3-tricarboxamide (trithiol monomer) and 2,2'-( ethylenedioxy)diethanethiol (dithiol monomer). Raman spectroscopy demonstrated the emergence of disulphide bond with a peak at 510 cm -1. Chemical reduction test was used to validate the reduction of the synthesised polymers, whereby polymer PI5 showed the highest thiol concentration which indicate the highest reduction.

บรรณานุกรม :
Lau , Yong Khee , Lim, Vuanghao , Asmawi, Mohd Zaini , Peh, Kok Khiang , Abdul Karim Khan, Nurzalina . (2557). Characterisation Of A Novel Synthesised Disulphide Cross-Linked Polymer And Mechanism Of Degradation.
    กรุงเทพมหานคร : Universiti Sains Malaysia, Malaysia.
Lau , Yong Khee , Lim, Vuanghao , Asmawi, Mohd Zaini , Peh, Kok Khiang , Abdul Karim Khan, Nurzalina . 2557. "Characterisation Of A Novel Synthesised Disulphide Cross-Linked Polymer And Mechanism Of Degradation".
    กรุงเทพมหานคร : Universiti Sains Malaysia, Malaysia.
Lau , Yong Khee , Lim, Vuanghao , Asmawi, Mohd Zaini , Peh, Kok Khiang , Abdul Karim Khan, Nurzalina . "Characterisation Of A Novel Synthesised Disulphide Cross-Linked Polymer And Mechanism Of Degradation."
    กรุงเทพมหานคร : Universiti Sains Malaysia, Malaysia, 2557. Print.
Lau , Yong Khee , Lim, Vuanghao , Asmawi, Mohd Zaini , Peh, Kok Khiang , Abdul Karim Khan, Nurzalina . Characterisation Of A Novel Synthesised Disulphide Cross-Linked Polymer And Mechanism Of Degradation. กรุงเทพมหานคร : Universiti Sains Malaysia, Malaysia; 2557.