?url_ver=Z39.88-2004&rft_id=1657011008&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=SINTESIS+DAN+KARAKTERISASI+BIODEGRADABLE+FOAM+DARI%0D%0ALIMBAH+PADAT+BONGOL+NANAS+MENGGUNAKAN+POLIVINIL%0D%0AALKOHOL+DENGAN+VARIASI+WAKTU&rft.creator=Tirza+Juita+%2C+Putri+Lanyo&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=540+Kimia+dan+ilmu+yang+berhubungan&rft.description=%0D%0APada+penelitian+ini%2C+telah+dilakukan+sintesis+dan+karakterisasi+biodegradable+foam%0D%0Adari+limbah+padat+bongol+nanas+menggunakan+polivinil+alkohol+dengan+variasi%0D%0Awaktu+.+Penelitian+ini+telah+dilakukan+untuk+membandingkan+hasil+variasi+waktu%0D%0Apada+sampel+yang+sudah+di+tempressing+dengan+alat+thermopressing.+Penelitian+ini%0D%0Adilakukan+dalam+beberapa+tahapan+yakni+isolasi+dan+karakterisasi+selulosa%2C+FTIR%2C%0D%0APenguji+kekerasan+(Hardness+Tester)%2CWater+Absorption+Index+(WAI).+Dari%0D%0Apenilitian+ini+diperoleh+selulosa+berwarna+putih+kekuningan+sebanyak+18%2C64.+Hasil%0D%0Aspektra+FTIR+selulosa+isolasi+dan+selulosa+komersial+tidak+menunjukkan+perbedaan.%0D%0AHasil+katerisasi+dan+analisis+dengan+selulosa%2C+pada+Penguji+Kekerasan+(Hardness%0D%0ATester).+biofoam+yang+paling+keras+terdapat+pada+sampel+variasi+waktu+15+menit%0D%0Ayang+hasilnya+13%2C5+kg+%2C+biofoam+yang+paling+gampang+retak+terletak+pada+variasi%0D%0Awaktu+40+menit+yang+hasilnya+18+gr%2C+serta+biofoam+yang+tidak+mengalami+keretakan%0D%0Anamun%2C+agak+melengkung+apabila+dibandingkan+dengan+bentuk+semula.+Pada+uji%0D%0Awater+absorpsion+index+memakai+system+standar+prosedur+ABNT+NBR+NM+ISO%0D%0A535(1999)).+Sampel+kemudian+ditimbang+kembali+dan+dihitung+pertambahan+berat%0D%0Asampel.%2C+didapat+pada+sampel+variasi+waktu15+menit+yang+sudah+dicelup+air+0%2C1607%0D%0Agr+dan+sesudah+di+celup+air+0%2C1766+gr.+sampel+variasi+waktu+25+menit+sebelum%0D%0Adicelup+air+hasilnya+0%2C2250+gr%2C+dan+sesudah+dicelup+0%2C3558.+Dan+variasi+yang%0D%0Aterakhir+40+menit%2C+sebelum+dicelup+0%2C2242+gr+dan+sesudah+di+celup+menjadi+0%2C3510%0D%0Agr.%0D%0AKata+Kunci+%3A+Isolasi+selulose%2C+biodegradable+foam%2C+FTIR%2C+Hardness+Tester%2C+WAI%0D%0A%0D%0AIn+this+research%2C+the+synthesis+and+characterization+of+biodegradable+foam+from%0D%0Apineapple+hump+solid+waste+using+polyvinyl+alcohol+was+carried+out+with+variations%0D%0Ain+time.+This+research+has+been+conducted+to+compare+the+results+of+time+variations%0D%0Aon+samples+that+have+been+tempered+with+a+thermopressing+tool.+This+research+was%0D%0Aconducted+in+several+stages%2C+namely+the+isolation+and+characterization+of+cellulose%2C%0D%0AFTIR%2C+Hardness+Tester%2C+Water+Absorption+Index+(WAI).+From+this+research%2C%0D%0A18.64%25+yellowish+white+cellulose+was+obtained.+The+results+of+the+FTIR+spectra+of%0D%0Aisolated+cellulose+and+commercial+cellulose+showed+no+difference.+Caterization%0D%0Aresults+and+analysis+with+cellulose%2C+on+the+Hardness+Tester.+the+hardest+biofoam+was%0D%0Afound+in+the+15-minute+time+variation+sample+which+resulted+in+13.5+kg%2C+the+biofoam%0D%0Athat+cracked+the+easiest+to+crack+was+in+the+40-minute+time+variation+which+resulted%0D%0Ain+18+gr%2C+and+the+biofoam+which+did+not+experience+cracks+however%2C+was+slightly%0D%0Acurved+when+compared+to+its+original+form.+The+water+absorption+index+test+uses%0D%0Athe+standard+procedure+ABNT+NBR+NM+ISO+535+(1999)).+The+sample+was+then%0D%0Aweighed+again+and+the+sample+weight+gain+was+calculated.+It+was+obtained+from+the%0D%0A15-minute+time+variation+sample+that+had+been+immersed+in+0.1607+gr+of+water+and%0D%0Aafter+being+immersed+in+0.1766+gr+of+water.+the+sample+time+variation+25+minutes%0D%0Abefore+being+immersed+in+water+the+result+is+0.2250+gr%2C+and+after+being+immersed+it%0D%0Ais+0.3558.+And+the+last+variation+is+40+minutes%2C+before+being+dyed+0.2242+gr+and%0D%0Aafter+being+dyed+it+becomes+0.3510+gr.%0D%0AKeywords%3A+Cellulose+isolation%2C+biodegradable+foam%2C+FTIR%2C+Hardness+Tester%2C+WAI&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2023-06-06&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F73516%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F73516%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F73516%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++Tirza+Juita+%2C+Putri+Lanyo++(2023)+SINTESIS+DAN+KARAKTERISASI+BIODEGRADABLE+FOAM+DARI+LIMBAH+PADAT+BONGOL+NANAS+MENGGUNAKAN+POLIVINIL+ALKOHOL+DENGAN+VARIASI+WAKTU.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F73516%2F