International Journal of Advanced and Applied Sciences

Int. j. adv. appl. sci.

EISSN: 2313-3724

Print ISSN: 2313-626X

Volume 4, Issue 3  (March 2017), Pages:  41-44

Title: Polyoxymethylene (POM) integrity resulting from its dependencies on material geometries and processing methodology

Author(s):  N. Arifin 1, *, H. Yusoff 2, S. Izman 2, A. Z. A. Khadir 2, R. Ali 1, S. Yacob 1


1Quality Engineering Department, Universiti Kuala Lumpur (UniKL), Malaysian Institute of Industrial Technology, Persiaran Sinaran Ilmu, Bandar Seri Alam, 81750, Johor, Malaysia
2Department of Mechanical Engineering, Universiti Teknology Malaysia, UTM Skudai, 81310 Johor, Malaysia

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POM-copolymer bond breaking leads to change depending with respect to processing methodology and material geometries. This paper present the oversights effect on the material integrity due to different geometries and processing methodology. Thermo-analytical methods with reference were used to examine the degradation of thermomechanical while Thermogravimetric Analysis (TGA) was used to judge the thermal stability of sample from its major decomposition temperature. Differential Scanning Calorimetry (DSC) investigation performed to identify the thermal behaviour and thermal properties of materials. The result shown that plastic gear geometries with injection molding at higher tonnage machine more stable thermally rather than resin geometries. Injection plastic gear geometries at low tonnage machine faced major decomposition temperatures at 313.61˚C, 305.76 ˚C and 307.91 ˚C while higher tonnage processing method are fully decomposed at 890˚C, significantly higher compared to low tonnage condition and resin geometries specimen at 398˚C. Chemical composition of plastic gear geometries with injection molding at higher and lower tonnage are compare based on their moisture and VOC content, polymeric material content and the absence of filler. Results of higher moisture and VOC content are report in resin geometries (0.120%) compared to higher tonnage of injection plastic gear geometries which is 1.264%. The higher tonnage of injection plastic gear geometry are less sensitive to thermo-mechanical degradation due to polymer chain length and molecular weight of material properties such as tensile strength, flexural strength, fatigue strength and creep resistance. 

© 2017 The Authors. Published by IASE.

This is an open access article under the CC BY-NC-ND license (

Keywords: POM materials, Thermo-mechanical, Plastic degradation, Gear geometries, Injection plastic gear

Article History: Received 6 November 2016, Received in revised form 4 January 2017, Accepted 7 January 2017

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Arifin N, Yusoff H, Izman S, Khadir AZA, Ali S, and Yacob S (2017). Polyoxymethylene (POM) integrity resulting from its dependencies on material geometries and processing methodology. International Journal of Advanced and Applied Sciences, 4(3): 41-44


Archodoulaki VM, Luftl S, Koch T, and Seidler S (2007). Property changes in polyoxymethylene (POM) resulting from processing, ageing and recycling. Polymer Degradation and Stability, 92(12): 2181-2189.
Luftl S, Archodoulaki VM, and Seidler S (2006). Thermal-oxidative induced degradation behaviour of polyoxymethylene (POM) copolymer detected by TGA/MS. Polymer Degradation and Stability, 91(3): 464-471.
Rayand S and Ralph PC (2012). Thermal degradation of polymer and polymer composites. In: Kutz M (Eds.), Handbook of Environmental Degradation of Materials: 213-238. 2nd Edition, Elsevier, Amsterdam, Netherlands.
Wright DG, Dunk R, Bouvart D, and Autran M (1988). The effect of crystallinity on the properties of injection moulded polypropylene and polyacetal. Polymer, 29(5): 793-796.
Xioa KQ and Zhang LC (2002). The role of viscous deformation in the machining of polymers. International Journal of Mechanical Sciences, 44(11): 2317-2336.