Sains Malaysiana 44(6)(2015): 843–852

 

Solid-State Self-Healing Systems: The Diffusion of Healing Agent for Healing Recovery

(Sistem Swa-Pemulihan Pepejal: Proses Penyusupan Rawak Agen Pemulihan untuk Perawatan Komposit)

 

M.S. MD JAMIL1,2*, F.R. JONES1, N.N. MUHAMAD1 & S.M. MAKENAN1

 

1Faculty of Science and Technology, Universiti Kebangsaan Malaysia

43600 Bangi, Selangor Darul Ehsan, Malaysia

 

2Department of Materials Science & Engineering, University of Sheffield, S1 3JD

United Kingdom

 

Received: 15 January 2014/Accepted: 15 November 2014

 

ABSTRACT

A clear understanding on the fundamental mechanism in solid state self-healing resin system might significantly improve the optimization of healing performance. The focus of this study was to prove the diffusion (through thermal inter-diffusion) of a linear healing agent within the network matrix resin. The results had demonstrated that 45 to 21 percentage recoveries in fracture toughness (K1C) were observed within the third healing cycles of the healable resin. Based on the optical microscopy, scanning electron microscopy (SEM) and time-of-flight secondary ion mass spectrometry (ToF-SIM) analyst; the diffusion of healing agent was also demonstrated by the change in the morphology and chemical images of the healing agent on the fracture surface specimen, before and after healing process.

 

Keywords: Chemical image; cooling rate; diffusion; healing efficiency

 

ABSTRAK

Pemahaman yang jelas berkenaan mekanisme asas dalam sistem swa-pemulihan pepejal boleh meningkatkan keupayaan optimum poses pembaikan polimer. Fokus dalam kajian ini adalah untuk membuktikan proses penyusupan rawak berlaku secara termal oleh agen pemulihan dalam matrik resin. Sebanyak 45 hingga 21 peratus pemulihan direkodkan melalui ujian liat patah dalam 3 kitaran proses pemulihan. Berdasarkan ujian mikroskopik optik, mikroskop elektron imbasan (SEM) dan masa penerbangan spektrokopi jisim atom sekunder (SIMS); proses penyusupan rawak agen pemulihan dapat dibuktikan melalui perubahan morfologi dan pemetaan kimia di permukaan retak sampel pemulihan, sebelum dan selepas pemulihan.

 

Kata kunci: Kadar penyejukan; pemetaan kimia; penyusupan; proses pemulihan

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*Corresponding author; email: suzeren@ukm.edu.my

 

 

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