E pili ana i ka Cellulose
ʻO ka cellulose kahi polysaccharide macromolecular i haku ʻia me ka glucose. Aia i loko o nā mea kanu ʻōmaʻomaʻo a me nā mea ola kai. ʻO ia ka mea i hoʻolaha nui ʻia a nui loa i ka polymer maoli ma ke ʻano. Loaʻa iā ia ka biocompatibility maikaʻi, renewable a me Biodegradable a me nā pono ʻē aʻe. Ma o photosynthesis, hiki i nā mea kanu ke synthesize i nā haneli miliona o ka cellulose i kēlā me kēia makahiki.
Nā Manaʻo Hoʻohana Cellulose
Ua kaupalena ka cellulose kuʻuna i kona hoʻohana ākea ma muli o kona mau kino kino a me nā waiwai kemika, ʻoiai he ʻano hana like ʻole ka cellulose kūlohelohe polymer ma hope o ka hana ʻana a me ka hoʻololi ʻana, hiki ke hoʻokō i nā pono like ʻole o nā ʻoihana like ʻole. ʻO ka hoʻohana pono ʻana o nā mea hana cellulose ua lilo i ʻano hoʻomohala kūlohelohe a me nā wahi hotspots noiʻi o nā mea polymer.
Hana ʻia nā derivatives cellulose e ka esterification a i ʻole etherification o nā pūʻulu hydroxyl i nā polymers cellulose me nā reagents kemika. Wahi a nā hiʻohiʻona o nā huahana hopena, hiki ke hoʻokaʻawale ʻia nā derivatives cellulose i ʻekolu mau ʻāpana: cellulose ethers, cellulose esters, a me cellulose ether esters.
1. Cellulose etera
ʻO ka cellulose ether kahi huaʻōlelo maʻamau no ke ʻano o nā derivatives cellulose i hoʻokumu ʻia e ka hopena o ka cellulose alkali a me ka etherifying agent ma lalo o kekahi mau kūlana. ʻO ka cellulose ether kahi ʻano o ka cellulose derivative me nā ʻano like ʻole, nā kahua noi ākea, ka nui hana nui a me ka waiwai noiʻi kiʻekiʻe. ʻO kāna noi e pili ana i nā ʻano he nui e like me ka ʻoihana, ka mahiʻai, ka ʻoihana kemika i kēlā me kēia lā, ka palekana o ke kaiapuni, aerospace a me ka pale aupuni.
ʻO nā cellulose ethers i hoʻohana maoli ʻia i ke kālepa: methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose a me hydroxypropyl methylcellulose Cellulose etc.
2. Cellulose ester
Hoʻohana nui ʻia nā cellulose esters i nā kula o ka pale aupuni, ʻoihana kemika, biology, lāʻau lapaʻau, kūkulu a me ka aerospace.
ʻO nā esters cellulose i hoʻohana maoli ʻia i ke kālepa: cellulose nitrate, cellulose acetate, cellulose acetate butyrate a me cellulose xanthate.
3. Cellulose eter ester
ʻO ka cellulose ether esters nā mea hoʻohui ester-ether.
Kahua noi:
1. kahua lāʻau lapaʻau
Hoʻohana nui ʻia ka cellulose ether a me ka ester derivatives i ka lāʻau lapaʻau no ka mānoanoa, excipient, hoʻokuʻu mau, hoʻokuʻu ʻia, hana kiʻiʻoniʻoni a me nā kumu ʻē aʻe.
2. Ke kahua uhi
He koʻikoʻi koʻikoʻi nā esters cellulose i nā noi uhi.ʻO nā esters cellulosehoʻohana ʻia i nā mea hoʻopaʻa, nā resins i hoʻololi ʻia a i ʻole nā mea kiʻiʻoniʻoni mua e hāʻawi i nā uhi me nā waiwai maikaʻi loa.
3. kahua ʻenehana membrane
Loaʻa nā pono o ka cellulose a me nā mea derivative o ka hoʻopuka nui, ka hana paʻa, a me ka recyclability. Ma o ka hoʻohui ʻana i ka papa-by-layer, ke ʻano o ka hoʻololi ʻana i ke ʻano, 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 i hoʻohana nui ʻia.
4. ʻOihana kūkulu
Loaʻa i nā cellulose ethers ka ikaika gel thermally reversible a no laila he mea pono e like me nā mea hoʻohui i nā mea hana, e like me nā mea hoʻohui kīleʻa i hoʻokumu ʻia.
5. Aerospace, nā kaʻa ikehu hou a me nā mea uila kiʻekiʻe
Hiki ke hoʻohana ʻia nā mea optoelectronic e pili ana i ka cellulose i ka aerospace, nā kaʻa ikehu hou a me nā mea uila kiʻekiʻe.
Ka manawa hoʻouna: Apr-25-2024