Nkhani

Kuyanika zovala padzuwa kumaganiziridwa kuti ndi kwabwino, ndipo ndikosavuta komanso kopanda mphamvu. Zovala zowumitsidwa padzuwa zimanunkhiza mwatsopano, koma palinso zovala zomwe siziyenera kuyanika. Chitsanzo chimodzi ndi matawulo osambira.

Chifukwa chiyani chopukutira chowumitsidwa pamzere cholimba komanso cholimba ngati njuchi ya ng'ombe? Ndi funso lomwe lazunguza asayansi kwa nthawi yayitali, koma gulu la ofufuza ochokera ku yunivesite ya Hokkaido ku Japan lathetsa chinsinsicho. Iwo amati aphwanya “kiyi ya kuyanika mpweya” ndipo m’katimo aphunzirapo kanthu kena kofunikira ponena za madzi.

Ponena za izi, nsalu zambiri zomwe sizinapangidwe ndi pulasitiki (kupatulapo silika ndi ubweya) zimachokera ku zomera. Thonje ndi ulusi woyera wonyezimira wochokera ku njere za chitsamba chaching’ono, pamene rayon, Modal, fibrin, acetate, ndi nsungwi zonse zimachokera ku ulusi wamatabwa. Ulusi wa zomera ndi mankhwala omwe amathandiza kuti makoma a maselo a zomera akhale olimba, ndipo ulusi umayamwa kwambiri, chifukwa chake timagwiritsa ntchito thonje kupanga matawulo omwe amamveka bwino kuposa polyester. Mamolekyu amadzi amamangiriridwa ku cellulose ndikumamatira motsatira njira yotchedwa capillarity, yomwe imatha kulepheretsa mphamvu yokoka ndikukokera madzi pamwamba.

Chifukwa madzi ndi molekyulu polar, kutanthauza kuti ali ndi mlandu wabwino mbali imodzi ndi zoipa mlandu wina, madzi mosavuta kukopeka kulipira. Gululo likunena kuti mapangidwe a ulusi wowoloka pawokha mu nsalu zowumitsidwa ndi mpweya monga matawulo a thonje kwenikweni "amamanga madzi", kapena madzi amachita mwapadera chifukwa amatha kumamatira ku chinachake pamwamba pake chomwe chimakhala ngati sangweji, kubweretsa ulusi pafupi. Kafukufuku waposachedwa akuwoneka m'magazini yaposachedwa ya Journal of Physical Chemistry.

Gululo lidachita zoyeserera zosonyeza kuti kumanga madzi pamwamba pa ulusi wa thonje kumapanga mtundu wa "capillary adhesion" pakati pa tinthu tating'onoting'ono. Zingwezi zikamamatirana, nsaluyo imalimba kwambiri. Katswiri wofufuza pa yunivesite ya Hokkaido, Ken-Ichiro Murata, adanena kuti madzi omangikawo amawonetsa mawonekedwe apadera a haidrojeni, mosiyana ndi madzi wamba.

Wofufuza Takako Igarashi anati: "anthu amaganiza, akhoza kuchepetsa mkangano pakati pa thonje CHIKWANGWANI nsalu zofewa, Komabe, zotsatira kafukufuku wathu zikusonyeza kuti kulimbikitsa thonje CHIKWANGWANI thonje thaulo la hydration kuumitsa, amapereka maganizo atsopano kumvetsa mfundo ya ntchito ya zofewetsa nsalu, kutithandiza kukhala kukonzekera bwino, chilinganizo ndi kapangidwe ka nsalu."