E pili ana i ka Cellulose
He polysaccharide macromolecular ka Cellulose i haku ʻia me ka glucose. Loaʻa ia i nā nui he nui i nā mea kanu ʻōmaʻomaʻo a me nā meaola kai. ʻO ia ka mea polymer kūlohelohe i hoʻolaha nui ʻia a nui loa i ke kūlohelohe. Loaʻa iā ia ka biocompatibility maikaʻi, hiki ke hoʻohou hou ʻia a me ka Biodegradable a me nā pono ʻē aʻe. Ma o ka photosynthesis, hiki i nā mea kanu ke hana i nā haneli miliona o ka cellulose i kēlā me kēia makahiki.
Nā Manaʻolana Noi Cellulose
Ua kaupalena ʻia ka hoʻohana ākea ʻana o ka cellulose kuʻuna ma muli o kona mau waiwai kino a me ke kemika, ʻoiai he ʻokoʻa nā waiwai hana o ka cellulose mea polymer maoli ma hope o ka hana ʻana a me ka hoʻololi ʻana, hiki ke hoʻokō i nā pono like ʻole o nā ʻoihana like ʻole. Ua lilo ka hoʻohana pono ʻana o nā mea hana cellulose i mea hoʻomohala kūlohelohe a me nā wahi noiʻi o nā mea polymer.
Hoʻopuka ʻia nā derivatives cellulose ma o ka esterification a i ʻole etherification o nā hui hydroxyl i loko o nā polymers cellulose me nā reagents kemika. Wahi a nā ʻano hoʻonohonoho o nā huahana hopena, hiki ke hoʻokaʻawale ʻia nā derivatives cellulose i ʻekolu mau māhele: cellulose ethers, cellulose esters, a me cellulose ether esters.
1. ʻEtera cellulose
ʻO ka Cellulose ether kahi huaʻōlelo maʻamau no kahi moʻo o nā derivatives cellulose i hoʻokumu ʻia e ka hopena o ka cellulose alkali a me ka mea etherifying ma lalo o kekahi mau kūlana. ʻO ka Cellulose ether kahi ʻano derivative cellulose me nā ʻano like ʻole, nā kahua noi ākea, ka nui o ka hana a me ka waiwai noiʻi kiʻekiʻe. Pili kāna noi i nā kahua he nui e like me ka ʻoihana, ka mahiʻai, ka ʻoihana kemika o kēlā me kēia lā, ka palekana o ke kaiapuni, ka aerospace a me ka pale kaua aupuni.
ʻO nā cellulose ethers i hoʻohana maoli ʻia i ke kālepa ʻana: methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose a me hydroxypropyl methylcellulose Cellulose etc.
2. ʻEster cellulose
Hoʻohana nui ʻia nā esters cellulose ma nā kahua o ka pale kaua aupuni, ka ʻoihana kemika, ka biology, ka lāʻau lapaʻau, ke kūkulu ʻana a me ka aerospace.
ʻO nā cellulose esters i hoʻohana maoli ʻia ma ke kālepa ʻana: cellulose nitrate, cellulose acetate, cellulose acetate butyrate a me ka cellulose xanthate.
3. ʻEtera cellulose
ʻO nā cellulose ether esters he mau mea i hui pū ʻia me ka ester-ether.
Kahua noi：
1. Kahua lāʻau lapaʻau
Hoʻohana nui ʻia nā cellulose ether a me nā ester derivatives i ka lāʻau lapaʻau no ka hoʻomānoanoa, ka excipient, ka hoʻokuʻu mau ʻia, ka hoʻokuʻu ʻia ʻana, ka hana ʻana i kahi kiʻiʻoniʻoni a me nā kumu ʻē aʻe.
2. Kahua uhi
He mea nui loa ka hana a nā cellulose esters i nā noi uhi.Nā esters cellulosehoʻohana ʻia i loko o nā mea hoʻopaʻa, nā resins i hoʻololi ʻia a i ʻole nā mea pre-film e hāʻawi i nā uhi me nā waiwai maikaʻi loa.
3. Kahua ʻenehana membrane
Loaʻa i nā mea cellulose a me nā mea derivative nā pono o ka hoʻopuka nui, ka hana paʻa, a me ka hiki ke hana hou ʻia. Ma o ka hui ponoʻī papa-ma-papa, ke ʻano hoʻohuli pae, ka ʻenehana electrospinning a me nā ʻano ʻē aʻe, hiki ke hoʻomākaukau ʻia nā mea membrane me ka hana hoʻokaʻawale maikaʻi loa. Ma ke kahua o ka ʻenehana membrane ua hoʻohana nui ʻia.
4. ʻĀpana kūkulu hale
Loaʻa i nā cellulose ethers ka ikaika gel hoʻohuli wela kiʻekiʻe a no laila he mea pono ia e like me nā mea hoʻohui i nā ʻāpana kūkulu, e like me nā mea hoʻohui tile adhesive i hoʻokumu ʻia i ka sima.
5. Aerospace, nā kaʻa ikehu hou a me nā mea uila kiʻekiʻe
Hiki ke hoʻohana ʻia nā mea optoelectronic hana i hoʻokumu ʻia i ka cellulose i loko o ka aerospace, nā kaʻa ikehu hou a me nā hāmeʻa uila kiʻekiʻe.
Ka manawa hoʻouna: ʻApelila-25-2024