Muthmirah Ibrahim, Miss
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/35563
This page provides access to scholarly publication by UniMAP Faculty members and researchers2024-03-28T09:44:15ZPolypropylene/organically modified Sabah montmorillonite nanocomposites: Surface modification and nanocomposites characterization
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/35568
Polypropylene/organically modified Sabah montmorillonite nanocomposites: Surface modification and nanocomposites characterization
Harintharavimal, Balakrishnan; Muthmirah, Ibrahim; Mat Uzir, Wahit; Azman, Hassan
The aim of the work is to extract, purify, and organically modify montmorillonite (MMT) of Lahad Datu, Sabah bentonite. The octadecylamine treated Sabah MMT (S-OMMT) (2-8 wt%) was then melt blended with polypropylene (PP) and maleated polypropylene (PPgMAH) (10 wt%) via single screw nanomixer extruder followed by injection molding into test samples to examine the mechanical, thermal, and morphological properties of PP/S-OMMT nanocomposites. Unmodified Sabah MMT (S-MMT) and commercial grade MMT (Nanomer 1.30P) filled PP nanocomposites were also characterized for comparison purpose. X-ray diffraction results showed that the interlayer spacing of S-MMT increased after organic modification as Fourier transform infra-red and elemental analysis evidenced the presence of octadecylamine. PP/S-OMMT nanocomposites showed a better dispersion and strength compared to PP/Nanomer 1.30P nanocomposites due to its smaller MMT platelet size. differential scanning calorimetry and Thermogravimetry analysis revealed that the thermal stability and crystallinity of neat PP improved with the addition of all types of MMT. Dynamic mechanical analyzer showed that PP nanocomposites have higher storage modulus (E') values than the neat PP over the whole temperature range. The new PP/S-OMMT nanocomposites showed a comparable performance with PP/Nanomer 1.30P nanocomposites exhibiting promising future applications of S-MMT in polymer/MMT nanocomposites.
Link to the publisher's homepage at http://onlinelibrary.wiley.com
2011-01-01T00:00:00ZTensile and morphology properties of polylactic acid/ treated typha latifolia composites
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/33411
Tensile and morphology properties of polylactic acid/ treated typha latifolia composites
Muthmirah, Ibrahim; Jalilah, Abd Jalil; Syarifah Nuraqmar, Syed Mahamud; Yusrina, Mat Daud; Salmah, Husseinsyah, Dr. Ir.; Muhammad Rafi’, Yahya
This paper is focused to investigate the effect of treated natural fiber (typha latifolia) content on tensile and morphology properties of polylactic acid (PLA)/treated typha latifolia (T-TyLa) composites. The composite was compounded using heated two roll mill and the composite samples were prepared through compression molding. Tensile test and scanning electron microscopy (SEM) analysis were carried out to study the properties of PLA/T-TyLa composites. The results showed that the tensile strength of PLA/T-TyLa composites was decreased for about 43% with initial addition of T-TyLa content. The tensile modulus of the composites was increased (23%-91%) with increasing of fiber content. However, increased in fiber content reduced the elongation at break for about 53%-67% of PLA/T-TyLa composites. The optimum increment was obtained at 30 wt% of fiber content. SEM results showed that fiber dispersion was better for PLA/T-TyLa composites at lower fiber content.
Link to publisher's homepage at http://www.ttp.net/
2013-12-01T00:00:00Z