Bisphenol A (BPA): Jam tic ma pire tek pa piny ma tiyo maber

Nyamu lembe matuc ikum piny ma pire tek pa physicochemical

Kite pa molecule ma ukoc: BPA molecule utiye ku phenolic hydroxyl groups ario ma gicokiri ku propane skeleton. Kit gedo eni miyo tic ma pire tek pa kemikol. Udul aryo pa phenolic hydroxyl miyo BPA nucleophilicity matek, ma weko ecopo timo tic ku jam piny matung tung. I saa marom, propane skeleton miyo molecule ku rwom moku mi tek man steric hindrance, ma loko rwom pa BPA man tic pare i lembe matung tung.

Piny ma nen: BPA utiye ku rwom mi lyethu pa 158 - 159°C, kabedo mi lyethu ma malu 400.8°C, man pek pa 1.195g/cm3. Kabedo pare ma malu mi lyethu man mi lyethu miyo bedo maber i thenge mi lyethu man kero, man pek pare maber timo tic i lembe ma mitu pek pa piny moko, calu i yiko plastics man resins moko, kama pek pa BPA copo loko kite ma kum man yub pa piny ma juyubu. Ecopo nyai nyanok i carbon tetrachloride, ecopo nyai ungo i pii, ento enyayu i kit piny ma tung tung, man kite mi nyai eni nyuthu tic pare man yore mi tic kudu i kit piny matung tung.

Tic ma pire tek i kabedo matung tung

Yubu plastik man resin:
Polycarbonate (PC) Production: BPA ubedo piny ma pire tek ma jutiyo kudu pi yubu polycarbonate (PC). Polycarbonate ucungo iwi lembe madwong pi bedo maleng pa wange (lero ma kadhu 90%), bedo ku tego ma lee (250 - 300 wange pa gilasi ma rwinyo), bedo maber, man bedo maber pa lyethu (lyet ma nyayu lyethu ma romo 130 - 140°C). I tic mi cuma man mac, PC jutiyu kudu lee pi yiku kompyuta, simu, man piny mukende ma tiyo ku mac, ma miyo ngo kende kende gwok maber pi jam tic ma iye ento de medo rwom pa piny pi nen maleng man kite maber. I tic mi yiku mutukari, PC jutiyu kudu pi yiku jam umu mac pa mutukari, jam tic, man piny mukende mapol. Lero ma malu pa ler mi wi mutukari miyo ler bedo maleng i dyewor, man bedo maber pa jam tic miyo bedo maber pa jam tic man tiyo kudu pi kare malac. I tic mi gedo, PC - ma juyubu ku mac pa ceng, canopies mi mac, man piny mukende ma jutiyo kudu lee i ot pa lwak calu duka madongo mi wil man kabedo mi tuku pi bedo migi maber mi juku ret man kero migi mi lero, ma weko kabedo ma leng man ma ber.

Epoxy Resin Synthesis: BPA de ubedo monomer ma pire tek pi yiku epoxy resins. Epoxy resins utiye ku rwom maber man ecopu mako piny matung tung calu cuma, yen, man gilasi, ci gibedo kabedo ma pire tek i rwom mi mako piny. I tic mi aerospace, epoxy - based adhesives jutiyu kudu pi mako jamb kum ndege pi bedo maleng man bedo maber pa jamb ndege i kare mi ngwec ma tek. I saa marom, epoxy resins utiye ku kero maber mi juku lyethu pa kemikol man kero mi juku lyethu man jutiyu kudu lee i jam ketho piny i jamb tiyo ku jam piny. Ku lapor, circuit boards i jam tic ma tiyo ku mac pol kare juyike ku epoxy resins pi gwoko jam tic ma tiyo ku mac kud i dhuny pa piny ma woko man mi medo kero man kwo pa jam tic ma tiyo ku mac. I yore mi goro, epoxy resin coatings jutiyu kudu pi gwoko wi cuma, ma copo juku lyethu pa piny ma calu acids man alkalis man medo kwo pa cuma.

Tic mange maber pa kemikol:
Yubu pa piny ma juku mac: Jam ma juku mac calu tetrabromobisphenol A juyubu kud i BPA. Medu piny ma jwigo mac ubedo piny ma pire tek in tic macalo piny ma juyubu ku plastik man bongo. I piny ma juyubu ku plastik, piny ma juku mac copo jwigo lyethu pa piny. Ka juketho i wang mac, yamo ma nyai ma nyai ungo nyo carbonaceous layer ma juyubu ma juyubu ku flame retardants copo juku wotho pa oxygen man lyethu man juku nyai pa mac. Ku lapor, medu piny ma jwigo mac i plastik pa piny ma tiyo ku mac man piny ma tiyo ku mac copo jwigo peko pa mac man gwoko kwo pa dhanu man piny migi. I bongo, tic ku piny ma juku mac copo ketho bongo bedo ma wang ungo ka girombo ku mac man dwoko piny peko ma bongo copo wango i mac.

Antioxidants man Heat Stabilizers: BPA copo bedu calu antioxidant man heat stabilizer i piny moko ma juyubu ku plastik man rubber. I kare mi yubu plastik, piny macalo lyethu man yamu ma tek nyayu plastik doko tii man nyothre, ma nyayu peko i tic pa piny man kwo pa piny. Calu antioxidant, BPA copo maku free radicals in system pa plastic, juku chain transfer pa oxidation reactions, man juku tic pa plastik. I saa marom, calu piny ma jwigo lyethu, BPA copo medo kero pa plastik i kabedu ma lyethu tek man juku plastik kud i nyai, loko rangi, man peko mange ikare ma jutiyo kudu. I piny ma juyubu ku rubber, BPA copo timo tic marom, medo kero pa rubber ikum lyethu man oxygen man medo kwo pa piny ma juyubu ku rubber calu taya pa mutukari man rubber seals.

Lembe mi bedo ber pa dhanu man dwokowang lembe pa ju ma timo tic

Sayu ikum peko mi yot kum: BPA utiye ku rwom moku mi tho ma nok man ecopu wotho man loko kwo pa dhanu i kabedu man kum dhanu. Lembe madwong ma juponjo unyutho nia BPA utiye ku adwogi pa estrogen man ecopu nyayu peko i kum dhanu. Mapire tek ni juma nyathin, dongo pa yore migi mi nyodo copo bedu marac, ma copo kelo two ma mako yore mi nyodo. I saa marom, BPA copo ketho insulin resistance, ma kelo peko mi yot kum calu sukari madwong i rimu man pek pa kum. Lembe moko ma jutimo ikum lei unyutho nia lei ma jutimo igi lembe ma jutimo igi BPA pi kare malac gibedo ku dongo pa dul kom ma nyayu nyithindho man aloka loka mi kura migi. Kadi bende sayusac ikum adwogi pa BPA ikum yot kum pa dhanu podi ubetimere, ngom madwong utingo cik mi juku tic ku BPA i piny moko pi lworo pa yot kum.

Lembe ma jutimo i tic man dongo pa lubo cik: Ni lubre ku lembe ma nyayu lworo ikum BPA, ngom madwong man kabedo madwong iwi ngom uketho cik ma juketho pi juku tic kude. I 2011, jang tic mi yot kum mi China man dipatment abusiel mukende uketho cik ikum tic ku BPA i yubu, kelo piny kud i ngom mange, man lworo cupa mi cak pa awiya. Ngom man kabedo macalo United States, Canada, man European Union de gi ketho cik ikum tic ku BPA i cam, piny ma juyubu pi juma nyathin, man piny mukende mapol. Ni lubre ku cik maeni, ju ma timo tic eni gibe sayu yore mukende mi BPA, calu bisphenol S (BPS) man diphenyl sulfone. I saa marom, ju ma yiku piny gibe mediri ka medo kero migi mi yubu piny man gibe medo kero pa gwoko leng pa piny pi jwigo wel pa BPA man ni rombu ku cik ma tek man yeny pa juruwil pi bedo ber pa piny ma jucwalo. I yore mi yubu polycarbonate man epoxy resins, kampuni medo rwom pa loko pa BPA man dwoko piny BPA ma podi udong ungo i piny ma juyubu ni medo kite ma timo kudu tic man ni medo yore mi catalyst.

Lembe ma pire tek

Karatasi mi gwoko ber pa piny

Pirango ma wayero BPA mwa?

Watiye ku lembakeca mi mio piny maber man maber pa BPA. Lembe ceke nicaku i wil pa piny ma jutiyo kudu pi yubu man yubu piny lubu cik ma tek mi gwoko leng pa piny ni neno ni piny ma jucwalo utiye maleng, ma rac manok, man lanyuth zo urombo ku cik ma malu mi tic. Watiye ku dul pa R & D ma copo mio kony nimakere ku yeny pa juruwil matung tung ni konyo juruwil ni kelo aloka loka man dongo dongo i lembe macalo plastik, resin, man kemikol maber. I saa marom, wabe ku diru maber mi gwoko piny ma jucwalo ni neno nia piny ma jucwalo bino i kare man ma rwinyo pi rombu ku yeny pa juruwil. I kind lembe mi BPA, wabedo ka ketho wigi ikum lembe ma juketho, wamedara ni ketho lim i R & D resources, man wa ketho yub maber man ma ber pa tic mi yubu piny ni mio ni juruwil piny ma rwate ku cik man ma jugeno.

Yer BPA mwa, rii cingi karacelu pi timo aloka loka madit i thenge mi piny ma tiyo maber, rwinyo peko, man cweyo piny maber.