Jadigia Ginting
Pusat Teknologi Bahan Industri Nuklir (PTBIN)-BATAN Kawasan Puspiptek Serpong 15314, Tangerang

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ANALISIS FISIOKIMIA POLIMERISASI TERMAL MONOMER IMIDA GUGUS UJUNG MALEAT SEBAGAI MATRIKS KOMPOSIT GINTING, JADIGIA; ., SUDIRMAN
Alchemy Jurnal Penelitian Kimia Vol 1, No 1 (2002)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

Abstrak (ina) :Analisis fisikokimia dilakukan dengan analisis intensitas spektra Infra Merah dari gugus fungsi reaktif monomer imida.Monomer imida yang disintesis yaitu maleimida dan bismaleimida dengan metose PMR 15, kemudian dikarakterisasi dengan HPLC, FTIR , 1H NMR dan  13C NMR.  Diperoleh hasil sintesis maleimida dan bismaleimida dengan yield 65,3 % dan 6 8 % .Polimerisasi monomer Imida diamati dengan STA program dinamik dan diperoleh titik  leleh dan zona polimerisasi pada 160oC dan 250-310oC untuk maleimida sedangkan untuk bismaleimida yaitu pada 160oC dan 210-280oC. Analisis fisikokimia dan polimerisasi dilakukan pada zona polimerisasi dari masing-masing monomer. Evolusi spektra gugus   δ =C-H, δ O=C-N, δ C=C dan v C-N-C diamati dengan FTIR. Secara spesifik gugus δ C-C suksinat.Dengan  analisis ini ditentukan temperatur dan waktu pemanasan untuk polimerisasi yang optimal .Analisis ini menunjukkan bahwa monomer imida gugus ujung maleat berpolimerisasi dengan pemanasan. Temperatur dan waktu pemanasan untuk polimerisasi maleimida adalah pada 285oC selama 5 jam dan 231oC selama 3 jam untuk bismaleimidaKeyword : Polimer,Matriks-komposit,Polimerisasi,Fisikokimia,Maleimida dan Bismaleimida
SYNTHESIS AND CHARACTERIZATION OF LiFePO4/PPy/CLAY COMPOSITE AS CATHODE MATERIAL FOR Li-ION BATTERY Gunawan, Indra; P, Yustinus; Sudaryanto, Sudaryanto; Ginting, Jadigia
Jurnal Sains Materi Indonesia Vol 21, No 2: JANUARY 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (695.879 KB) | DOI: 10.17146/jsmi.2020.21.2.5805

Abstract

SYNTHESIS AND CHARACTERIZATION OF LiFePO4/PPy/CLAY COMPOSITE AS CATHODE MATERIAL FOR Li-ION BATTERY. Conductor polymers have been used previously as a conducting agent or carbon source in various sol-gel and solid state methods to increase the conductivity of LiFePO4. The composite of LiFePO4/PPy/Clay were synthesized by mixing LiFePO4 and clay with a Ppy solution. The characterizations were done by using X-Ray Diffractometer (XRD), Scanning Electron Microscope (SEM) and LCR meter respectively. From XRD analysis it could be deduced that LiFePO4 has an ordered olivine structure with a Pnma space group. The SEM images provide clear evidence that small crystal particles of LiFePO4 either coat the surface of the clay particles or lie among them. These LiFePO4 particles have a small particle size (100–500 nm). With the increasing of LiFePO4 content, these small crystal particles at the surface or among the clay particles are increased. Increasing the PPy content to increase the conductivity of the material obtained. With the addition of clay from 5 to 10 wt. %, the DC conductivity of the blends is clearly observed to increase up to three orders of magnitude.