Wata ƙungiyar masana kimiyya daga Jami'ar Brown ta yi nazarin wata matsala da ta daɗe ba tare da an warware ta ba. Don haka, a wani lokaci, an ba da shawarar polymer PBO (polybenzoxazole) mai ɗorewa don ɗaukar makamai na jiki. Dangane da polybenzoxazole, an samar da makamai masu linzami na jiki don Sojojin Amurka, amma bayan wani lokaci an janye su. Ya juya cewa wannan kayan na kayan sulke na jiki yana ƙarƙashin lalacewa marar tabbas a ƙarƙashin rinjayar danshi. Wannan baya hana samarwa da siyar da makaman jiki daga gyare-gyare daban-daban na PBO a ƙarƙashin alamar Zylon, amma amincin kayan har yanzu yana barin abubuwa da yawa da ake so.
Matsalar amincin PBO shine yana amfani da polyphosphoric acid (PPA) mai lalatawa sosai don karya sarƙoƙin polymer yayin aikin kera kayan. Acid yana aiki azaman ƙarfi kuma azaman mai haɓakawa. Kwayoyin acid da suka rage a cikin kwayoyin polymer daga baya suna jin kansu yayin aikin makaman jiki ta hanyar lalata kayan ba zato ba tsammani. Idan kun maye gurbin PPA da wani abu marar lahani, aikin PBO polymers za a iya inganta sosai, amma ta menene?
Masana kimiyya daga Jami'ar Brown suna amfani da PBO a matsayin mai kara kuzari don gina sarkar kwayoyin halitta gwal na gwal (Au) da palladium (Pd) nanoparticles. A lokacin gwajin, an gano mafi kyawun rabo na ɗaya da ɗayan - 40% na zinariya da 60% palladium - wanda ya ƙara haɓaka samar da polymer. A wannan yanayin, da sauran ƙarfi ya kasance formic acid, wani muhalli abokantaka da sabunta albarkatun. Gabaɗaya, sabon tsarin fasaha yana da ƙarancin ƙarfin kuzari kuma ba tsada kamar amfani da polyphosphoric acid.
Bayan samar da isassun juzu'i na PBO polymer ta amfani da sabuwar hanyar, an gwada ta ta tafasa shi cikin ruwa da acid na kwanaki da yawa. Abubuwan da ba a taɓa lalacewa ba, wanda ke ba da bege ga haɓakar haɓakar kayan aikin riguna na jiki ta amfani da shi. An buga labarin da aka sadaukar don wannan bincike a cikin mujallar .
source: 3dnews.ru