02639ntm a2200241 a 4500001001400000003000700014005001700021008004100038020002200079040000800101100002500109245011400134260003400248300004600282500005600328502009300384504002800477520169500505610007102200650004502271650001102316856007002327vtls000093667KUKTEM20251117113316.0160309t2015    my a   f      000 0 eng d  aTHE0001027(Local)  aUMP0 aNoor Syahirah Othman10aSynthesis and characterization of hypercrosslinked polymer :beffect of reaction time /cNoor Syahirah Othman  aKuantan, Pahang :bUMP,c2015  axiii, 32 p. :bill. ;c30 cm. +e1 CD-ROM  aFaculty of Chemical & Natural Resources Engineering  aProject Paper (Bachelors of Chemical Engineering) -- Universiti Malaysia Pahang – 2015  aBibliography : p. 30-323 aHypercrosslinked polymers were categorized as one of the new generation of the porous polymers. The interest in hypercrosslinked polymer is growing rapidly due to their unique physical, chemical and potential applications in many fields from drug-delivery to coatings. In this research, non-aqueous dispersion polymerization precursor was used prior to hypercrosslinking reaction in order to obtain hypercrosslinked polymer and it is focus on the effect of reaction time on the morphology of hypercrosslinked polymer. Hypercrosslinked particles were prepared in post-polymerization using the Friedel-Craft reaction that was swollen in anhydrous 1, 2-dichloroethane (DCE). Scanning Electron Microscopy  (SEM), Fourier  transform  infrared  spectroscopy  (FTIR)  and  Thermal  Gravimetry  Analyzer  (TGA) were used to characterize the hypercrosslinked particles. The  results  show  that  before  post-polymerization,  the  precursor  display  good  quality  monodisperse spherical. However, after hypercrosslinking reaction, the quality of final product decrease which is for 12 hours and 24 hours of reaction time, hypercrosslinked particles were agglomerated but for 18 hours of reaction time, the particles can retain their quality similar with quality of precursor. For FTIR analysis, sample of 18 hours,  12 hours and 24 hours showed aliphatic CI streching vibrations at 1290 cm -1 ascribed to chloromethyl  group derived from VBC residues and  for TGA results, samples  of 18 hours, 12 hours and 24 have  the maximum  weight  loss  with  the  compositions  about  66.11 %, 47.07 %  and 39.96%  respectively. Sample of 18 hours has the highest reaction interval compared with the other.20aFaculty of Chemical & Natural Resources EngineeringxDissertations 0aUniversities and CollegesxDissertations 0aTheses40uhttp://ecollib.ump.edu.my/id/eprint/25963zAccess in library only