Kumapulasitiki, izithasiselo zidlala indima ebalulekile ekuthuthukiseni nasekuguquleni izakhiwo zezinto. Ama-nucleating agents kanye nama-clearing agents yizithasiselo ezimbili ezinjalo ezinezinhloso ezahlukene ekufinyeleleni imiphumela ethile. Nakuba zombili zisiza ekuthuthukiseni ukusebenza kwemikhiqizo yepulasitiki, kubalulekile ukuqonda umehluko phakathi kwala ma-agents amabili nokuthi anikela kanjani emkhiqizweni wokugcina.

Ukuqala ngoizinto ezibangela i-nucleating, lezi zithasiselo zisetshenziselwa ukusheshisa inqubo yokwenza amapulasitiki abe kristalu. Ukwakheka kwamakristalu kwenzeka lapho amaketanga e-polymer ehlelwe ngendlela ehlelekile, okuholela esakhiweni esiqinile. Indima ye-nucleating agent ukuhlinzeka indawo lapho amaketanga e-polymer anganamathela khona, okukhuthaza ukwakheka kwamakristalu nokwandisa ukwakheka kwamakristalu okuphelele kwezinto. Ngokusheshisa ukwakheka kwamakristalu, ama-nucleating agents athuthukisa izakhiwo zemishini nezokushisa zamapulasitiki, okwenza abe nzima futhi amelane nokushisa.

Enye yezinto ezisetshenziswa kakhulu ekukhiqizeni i-nucleating yi-talc, iminerali eyaziwa ngekhono layo lokudala ukwakheka kwekristalu. I-Talc isebenza njenge-ejenti yokubumba i-nucleating, inikeza izindawo zokubumba i-nucleation ukuze amaketanga e-polymer ahleleke nxazonke. Ukwengezwa kwayo kuphumela ekwandeni kwamazinga okubumba i-crystal kanye nesakhiwo sekristalu esicolekile, okwenza izinto zibe namandla futhi zizinzile ngokwezinga. Kuye ngezidingo ezithile kanye nezici zomkhiqizo wepulasitiki, ezinye izinto zokubumba i-nucleating ezifana ne-sodium benzoate, i-benzoic acid kanye nosawoti wensimbi nazo zingasetshenziswa.

Ngakolunye uhlangothi, ama-clarifiers ayizithasiselo ezandisa ukucaca kokukhanya kwepulasitiki ngokunciphisa ubumnyama. Ubumnyama buwukuhlakazeka kokukhanya ngaphakathi kwento, okuholela ekubukekeni okunamafu noma okukhanyayo. Indima yama-ejenti okucacisa ukuguqula i-polymer matrix, ukunciphisa amaphutha nokunciphisa imiphumela yokuhlakazeka kokukhanya. Lokhu kuphumela ezintweni ezicacile nezisobala, ezilungele kakhulu izinhlelo zokusebenza ezifana nokupakisha, amalensi okukhanya kanye nezibonisi.

Enye yezinto ezivame ukusetshenziswa ezicacisayo yi-sorbitol, utshwala obushukela obusebenza njenge-ejenti yokubumba. Njenge-ejenti yokucacisa, i-sorbitol isiza ekwakheni amakristalu amancane, achazwe kahle ngaphakathi kwe-matrix yepulasitiki. Lawa makristalu anciphisa ukuhlakazeka kokukhanya, okunciphisa kakhulu umswakama. I-Sorbitol ivame ukusetshenziswa ngokuhlanganiswa nezinye izinto ezicacisayo njenge-benzoin kanye ne-triazine derivatives ukuze kufezwe ukucaca nokucaca okufiselekayo komkhiqizo wokugcina.

Nakuba kokubili izinto ezikhipha i-nucleating kanye nezinto ezicacisayo zinomgomo ofanayo wokuthuthukisa izakhiwo zepulasitiki, kumelwe kuqashelwe ukuthi izindlela zazo zokusebenza ziyahlukahluka.Izinto ezibangela i-nucleatingkusheshisa inqubo yokwenza i-crystallization, ngaleyo ndlela kuthuthukiswe izakhiwo zemishini nezokushisa, kuyilapho ama-ejenti okucacisa eguqula i-polymer matrix ukuze kuncishiswe ukusabalala kokukhanya futhi kwandiswe ukucaca kokukhanya.

Ekuphetheni, ama-nucleating agents kanye nama-clearing agents ayizithasiselo ezibalulekile emkhakheni wepulasitiki, futhi isithasiselo ngasinye sinenjongo ethile. Ama-nucleating agents athuthukisa inqubo yokwenza i-crystallization, ngaleyo ndlela athuthukise izakhiwo zemishini nezokushisa, kuyilapho ama-clearing agents ehlisa umswakama futhi andise ukucaca kokukhanya. Ngokuqonda umehluko phakathi kwala ma-agents amabili, abakhiqizi bangakhetha isithasiselo esifanele ukuze bafeze umphumela ofiselekayo womkhiqizo wabo wepulasitiki, kungakhathaliseki ukuthi amandla akhuphukile, ukumelana nokushisa noma ukucaca kokukhanya.