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nūhou

He aha nā hana o ka haku meaʻai o cellulose ether?

Dkākau

ʻO nā haku meaʻai me nā cellulose ethers

Tkahua echnical

ʻO ka mea hou i kēia manawa e pili ana i nā haku meaʻai me nā cellulose ethers.

ʻenehana hope

Ua ʻike lōʻihi ʻo ia e hoʻokomo i nā cellulose ethers i loko o nā haku meaʻai, ʻoi aku ka nui o nā haku meaʻai i hoʻoponopono ʻia, e hoʻomaikaʻi i nā ʻano waiwai like ʻole e like me ka paʻa paʻa freeze-thaw a/a i ʻole ke ʻano, a i ʻole e hoʻomaikaʻi i ka paʻa i ka wā o ka hana ʻana, i hana ʻia a i ʻai ʻia paha.Hōʻike ʻia ka palapala patent Pelekane ʻo GB 2 444 020 i nā haku meaʻai me ka nonionic cellulose ether e like me methylcellulose, hydroxypropyl cellulose, a i ʻole hydroxypropyl methylcellulose.ʻO ka Methylcellulose a me ka hydroxypropyl methylcellulose he "thermos reversible gelling properties".Ua wehewehe kikoʻī ʻia i ka wā e hoʻomehana ʻia ai kahi hopena wai o ka methylcellulose a i ʻole hydroxypropyl methylcellulose, ʻo ka hui hydrophobic methoxy i loko o ka mole e hoʻoheheʻe ʻia, a lilo ia i gel aqueous.Ma ka ʻaoʻao ʻē aʻe, i ka wā e hoʻomaha ʻia ai ka gel i loaʻa, e hoʻihoʻi hou ʻia nā pūʻulu hydrophobic methoxy, kahi e hoʻi ai ka gel i ka wai wai kumu.

Hōʻike ʻo European Patent EP I 171 471 i ka methylcellulose he mea pono loa i nā haku meaʻai paʻa e like me nā mea kanu paʻa, ʻiʻo, a me nā pā soybean ma muli o kona ikaika gel i hoʻonui ʻia.Hāʻawi ka methylcellulose i ka paʻa a me ka hui pū ʻana i ka haku meaʻai paʻa, a laila e hāʻawi i ka manaʻo maikaʻi i nā mea kūʻai aku e ʻai ana i ka haku meaʻai i hoʻoponopono ʻia.Ke hoʻoheheʻe ʻia i loko o ka wai anuanu (e laʻa, 5 ° C a i ʻole ka lalo) ma mua a ma hope paha o ka hui ʻana me nā mea ʻē aʻe o ka haku meaʻai, hiki i ka soy methylcellulose i kona mana piha e hāʻawi i nā haku meaʻai paʻa me ka paʻa maikaʻi a me ka hui pū ʻana.hiki.

Eia naʻe, i kekahi mau hihia, ʻaʻole kūpono ka hoʻohana ʻana i ka wai anuanu no ka mea hana i ka meaʻai.No laila, makemake ʻia ka hāʻawi ʻana i nā eter cellulose e hāʻawi i nā haku meaʻai paʻa me ka paʻakikī a me ka hui pū ʻana ʻoiai ke hoʻoheheʻe ʻia nā eter cellulose i ka wai e pili ana i ka wela lumi.

ʻO ka hydroxyalkyl methylcellulose e like me ka hydroxypropyl methylcellulose (kahi i ʻike ʻia he pono i nā haku meaʻai) ʻike ʻia he modulus mālama haʻahaʻa i hoʻohālikelike ʻia me ka methylcellulose.ʻO ka hydroxyalkyl methylcelluloses e hōʻike ana i ka modulus mālama haʻahaʻa ʻaʻole i hana i nā gels ikaika.Pono nā ʻano kiʻekiʻe no nā gels nāwaliwali (Haque, A; Richardson; Morris, ER, Gidley, MJ a me Caswell, DC ma Carbohydrate Polymers22 (1993) p.175; a me Haque, A and Morris, ER1nCarbohydrate Polymers22 (1993) p. 161).

Ke hoʻokomo ʻia ka hydroxyalkyl methylcelluloses e like me ka hydroxypropyl methylcellulose (e hōʻike ana i ka modulus mālama haʻahaʻa) i loko o nā haku meaʻai paʻa, ʻaʻole lawa ko lākou paʻakikī a me ka cohesion no kekahi mau noi.

He mea ia o ka mea hou i keia manawa e haawi i ka hydroxyalkyl methylcellulose, oi aku ka hydroxypropyl methylcellulose, ka mea i hoohalikeia me ka hydroxyalkyl methylcelluloses i ikeia, e like me ka hydroxypropyl methylcellulose Ma ka hoʻohālikelike, ua hoʻolako ʻia nā haku meaʻai paʻa me ka paʻa maikaʻi a/a i ka hui pū ʻana.

ʻO kahi mea makemake o ka mea hou i kēia manawa, ʻo ia ka hāʻawi ʻana i ka hydroxyalkyl methylcellulose, ʻoi aku ka hydroxypropyl methylcellulose, ka mea e hāʻawi ai i nā haku meaʻai paʻa me ka paʻakikī maikaʻi a/a i ʻole ka hui pū ʻana me ka hydroxyalkyl methylcellulose He ʻoiaʻiʻo ke hoʻoheheʻe ʻia i loko o ka wai e pili ana i ka wela lumi.

Kahaha, ua loaʻa i ka hydroxyalkyl methylcellulose, oi aku ka hydroxypropyl methylcellulose, hiki ke hoʻohana 'ia i ka hoomakaukau ana o Hoʻohālikelike me ka paʻa meaʻai haku mele, ike paa meaʻai haku mele i oi aku ka paakiki a me ka cohesion.

ʻO ka mea kupanaha, ua ʻike ʻia kekahi mau hydroxyalkyl methylcelluloses, ʻoi aku ka hydroxypropyl methylcellulose, ʻaʻole pono e hoʻoheheʻe ʻia i loko o ka wai anuanu e hāʻawi i nā haku meaʻai paʻa me ka paʻa maikaʻi a me ka hui pū ʻana.


Ka manawa hoʻouna: Mar-21-2023