?url_ver=Z39.88-2004&rft_id=1917011058&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=STRUCTURE+ELUCIDATION+OF+4-VINYLPYRIDINE+DIMER%0D%0AAND+ACTIVITY+TESTS+AS+CORROSION+INHIBITOR+FOR%0D%0AMILD+STEEL+IN+CO2%E2%88%92SATURATED+BRINE+SOLUTION&rft.creator=MUHAMMAD+%2C+FADHIL+RAMADITO&rft.subject=610+Ilmu+kedokteran%2C+ilmu+pengobatan+dan+ilmu+kesehatan&rft.description=%0D%0AThe+dimerization+of+4-vinylpyridine+monomer+has+been+carried+out+through%0D%0Aoxidative+coupling+method+using+methanol+as+a+solvent+and+hydrochloric+acid+(HCl)%0D%0Aas+a+catalyst.+The+dimerization+product+was+compared+with+its+monomer+using+thin%0D%0Alayer+chromatography+(TLC)+and+fourier+transform+infrared+(FTIR)+spectroscopy.%0D%0AMolecular+weight+screening+and+compound+structure+elucidation+were+carried+out%0D%0Ausing+liquid+chromatography-mass+spectrometry+(LC%E2%88%92MS)+for+identification+of%0D%0A4-vinylpyridine+dimer%2C+D(4-VP).+D(4-VP)+was+evaluated+as+a+corrosion+inhibitor%0D%0Afor+mild+steel+in+a+brine+solution+saturated+with+CO2+using+wheel+test+method.%0D%0AMild+steel+surface+morphology+analysis+was+performed+using+scanning+electron%0D%0Amicroscope+(SEM).+The+D(4-VP)+was+appeared+as+a+transparent+yellow+diluted%0D%0Aliquid.+TLC+and+FTIR+results+showed+a+slight+difference+between+monomer+and%0D%0AD(4-VP)+by+the+spots+and+functional+groups%2C+respectively.+LC%E2%88%92MS+screening+result%0D%0Ashowed+that+the+formation+of+D(4-VP)+identified+at+retention+time+of+6.18%2C+6.59%2C+and%0D%0A16.22+minutes.+The+wheel+test+of+D(4-VP)+showed+a+corrosion+inhibition+activity%2C%0D%0Awhere+an+inhibition+efficiency+(IE)+increased+with+an+increase+of+D(4-VP)%0D%0Aconcentration.+The+highest+IE+(63.12%25)+was+reached+out+at+the+highest+concentration%0D%0Aused+(200+mgL%E2%88%921).+Mild+steel+protection+was+also+supported+by+a+surface%0D%0Avisualization+using+SEM.%0D%0AKeywords%3A+mild+steel%2C+CO2+corrosion%2C+corrosion+inhibitor%2C+4-vinylpyridine%0D%0Adimer%2C+oxidative+coupling.%0D%0A%0D%0ADimerisasi+4-vinilpiridin+telah+dilakukan+dengan+menerapkan+metode+kopling%0D%0Aoksidatif+menggunakan+pelarut+metanol+dan+katalis+asam+klorida+(HCl).+Produk%0D%0Ahasil+dimerisasi+dibandingkan+dengan+monomernya+menggunakan+kromatografi%0D%0Alapis+tipis+(KLT)+dan+spektroskopi+fourier+transform+infrared+(FTIR).+Screening%0D%0Aberat+molekul+dan+elusidasi+struktur+senyawa+dilakukan+menggunakan+kromatografi%0D%0Acair%E2%88%92spektrometri+massa+(LC%E2%88%92MS)+untuk+identifikasi+dimer+4-vinilpiridin%2C%0D%0AD(4-VP).+Senyawa+D(4-VP)+diuji+aktivitasnya+sebagai+inhibitor+korosi+terhadap%0D%0Abaja+lunak+dalam+brine+solution+yang+jenuh+CO2+menggunakan+metode+wheel+test.%0D%0AAnalisis+morfologi+permukaan+baja+lunak+dilakukan+menggunakan+scanning%0D%0Aelectron+microscope+(SEM).+Senyawa+D(4-VP)+berwujud+liquid+berwarna+kuning%0D%0Atransparan.+Hasil+KLT+dan+FTIR+masing-masing+menunjukkan+adanya+sedikit%0D%0Aperbedaan+antara+monomer+dan+produk+dimerisasi+berdasarkan+identifikasi+noda+dan%0D%0Agugus+fungsi.+Hasil+screening+LC%E2%88%92MS+menunjukkan+bahwa+pembentukan+senyawa%0D%0AD(4-VP)+teridentifikasi+pada+waktu+retensi+6.18%2C+6.59%2C+and+16.22+menit.+Hasil%0D%0Apengujian+metode+wheel+test+menunjukkan+aktivitas+inhibisi+dari+senyawa+D(4-VP)%0D%0Aterhadap+korosi%2C+di+mana+efisiensi+inhibisi+(IE)+meningkat+dengan+meningkatnya%0D%0Akonsentrasi+D(4-VP)+yang+digunakan.+Nilai+IE+terbesar+(63.12%25)+telah+dicapai+pada%0D%0Akonsentrasi+D(4-VP)+tertinggi+yang+digunakan+(200+mgL%E2%88%921).+Proteksi+baja+lunak%0D%0Ajuga+didukung+dengan+visualisasi+permukaan+menggunakan+SEM.%0D%0AKata+kunci%3A+baja+lunak%2C+korosi+CO2%2C+inhibitor+korosi%2C+dimer+4-vinilpiridin%2C%0D%0Akopling+oksidatif.&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%2F72455%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F72455%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F72455%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++MUHAMMAD+%2C+FADHIL+RAMADITO++(2023)+STRUCTURE+ELUCIDATION+OF+4-VINYLPYRIDINE+DIMER+AND+ACTIVITY+TESTS+AS+CORROSION+INHIBITOR+FOR+MILD+STEEL+IN+CO2%E2%88%92SATURATED+BRINE+SOLUTION.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F72455%2F