Ka hopena o DS ma ka carboxymethyl cellulose Quality

ʻO ka Carboxymethyl cellulose (CMC) he wai-soluble cellulose derivative i hoʻohana nui ʻia i nā ʻoihana like ʻole, me ka meaʻai, nā lāʻau lapaʻau, a me ka mālama pilikino.ʻO ka degere o ka hoʻololi (DS) kahi mea koʻikoʻi e pili ana i nā waiwai o CMC.Ma kēia ʻatikala, e kūkākūkā mākou i ka mana o DS i ka maikaʻi o ka carboxymethyl cellulose.

ʻO ka mea mua, pono e hoʻomaopopo i ke ʻano o ka hoʻololi ʻana.ʻO ke kiʻekiʻe o ka hoʻololi ʻana e pili ana i ka helu o nā hui carboxymethyl i kēlā me kēia ʻāpana glucose i ke kaulahao cellulose.Hoʻokumu ʻia ka CMC ma ka hana ʻana i ka cellulose me ka sodium monochloroacetate a me ka sodium hydroxide.I loko o kēia pane ʻana, ua pani ʻia nā pūʻulu hydroxyl ma ke kaulahao cellulose e nā hui carboxymethyl.Hiki ke hoʻomalu ʻia ke degere o ka hoʻololi ʻana ma o ka hoʻololi ʻana i nā kūlana hopena, e like me ke ʻano o ka sodium hydroxide a me ka sodium monochloroacetate, ka manawa pane, a me ka mahana.

Hoʻopili ka DS o CMC i kona mau waiwai kino a me kemika, e like me kona solubility, viscosity, a me ka paʻa wela.ʻO CMC me kahi DS haʻahaʻa he kiʻekiʻe o ka crystallinity a ʻoi aku ka liʻiliʻi o ka wai ma mua o CMC me kahi DS kiʻekiʻe.ʻO kēia no ka mea aia nā pūʻulu carboxymethyl i CMC me kahi DS haʻahaʻa ma ka ʻili o ke kaulahao cellulose, kahi e hōʻemi ai i kona wai-solubility.ʻO ka hoʻohālikelike, ʻo CMC me kahi DS kiʻekiʻe he ʻano amorphous a ʻoi aku ka ʻoi aku o ka wai ma mua o CMC me kahi DS haʻahaʻa.

Hoʻopili pū ʻia ka viscosity o CMC e ka DS.ʻO CMC me kahi DS haʻahaʻa he haʻahaʻa haʻahaʻa ma mua o CMC me kahi DS kiʻekiʻe.ʻO kēia no ka mea ua hoʻokaʻawale ʻia nā hui carboxymethyl i CMC me kahi DS haʻahaʻa, e hōʻemi ana i ka pilina ma waena o nā kaulahao cellulose a hoʻohaʻahaʻa i ka viscosity.ʻO ka hoʻohālikelike, ʻo CMC me kahi DS kiʻekiʻe ka viscosity kiʻekiʻe no ka mea ua pili kokoke nā hui carboxymethyl, e hoʻonui ai i ka pilina ma waena o nā kaulahao cellulose a hoʻonui i ka viscosity.

Ma waho aʻe o kāna mau waiwai kino, pili pū ka DS o CMC i kāna mau waiwai kemika.ʻAʻole paʻa ka CMC me kahi DS haʻahaʻa i nā wela kiʻekiʻe a me nā waiwai pH ma mua o CMC me kahi DS kiʻekiʻe.ʻO kēia no ka mea ʻoi aku ka maʻalahi o nā hui carboxymethyl i CMC me kahi DS haʻahaʻa i ka hydrolysis a hiki ke wāwahi i lalo o nā kūlana paʻakikī.ʻO ka hoʻohālikelike, ʻoi aku ka paʻa o ka CMC me kahi DS kiʻekiʻe i nā wela kiʻekiʻe a me nā waiwai pH no ka mea ua paʻa paʻa nā hui carboxymethyl i ke kaulahao cellulose.