Ethyl cellulose hydrophilic tabi hydrophobic

Ethyl cellulose jẹ polima sintetiki ti o jẹ lilo pupọ ni ọpọlọpọ awọn ile-iṣẹ, pẹlu awọn oogun, ounjẹ, ati itọju ara ẹni.O jẹ mimọ fun awọn ohun-ini iṣelọpọ fiimu ti o dara julọ, ibamu giga pẹlu awọn ohun elo miiran, ati resistance to dara si awọn kemikali ati awọn ifosiwewe ayika.Ọkan ninu awọn ohun-ini pataki ti ethyl cellulose ni hydrophobicity rẹ, eyiti o jẹ wiwọn isunmọ rẹ fun omi.

Hydrophobicity jẹ ohun-ini ti nkan kan ti o ṣapejuwe ifarahan rẹ lati kọ awọn ohun elo omi pada.Ni gbogbogbo, awọn nkan hydrophobic jẹ insoluble tabi aibikita ninu omi ati ṣọ lati ṣepọ pẹlu awọn ohun elo hydrophobic miiran.Hydrophobicity jẹ aṣoju nigbagbogbo nipasẹ wiwa awọn ẹgbẹ ti kii ṣe pola tabi kekere ninu eto molikula, gẹgẹbi awọn ẹwọn hydrocarbon tabi awọn oruka oorun didun.

Ethyl cellulose ni a gba pe o jẹ polima hydrophobic nitori wiwa awọn ẹgbẹ ethyl ninu eto molikula rẹ.Awọn ẹgbẹ ethyl jẹ nonpolar ati hydrophobic, ati pe wiwa wọn pọ si hydrophobicity gbogbogbo ti polima.Ni afikun, ethyl cellulose ni iwọn kekere ti aropo ti awọn ẹgbẹ ethyl, eyiti o ṣe alabapin siwaju si ihuwasi hydrophobic rẹ.

Bibẹẹkọ, hydrophobicity ti ethyl cellulose le ṣe atunṣe nipasẹ yiyipada iwọn aropo tabi nipa fifi awọn ẹgbẹ hydrophilic kun si eto polima.Fun apẹẹrẹ, iṣafihan awọn ẹgbẹ hydrophilic gẹgẹbi awọn ẹgbẹ hydroxyl tabi awọn ẹgbẹ carboxyl le ṣe alekun hydrophilicity ti polima ati ki o mu ilọsiwaju rẹ pọ si ninu omi.Iwọn aropo le tun pọ si lati mu nọmba awọn ẹgbẹ hydrophilic pọ si ati mu hydrophilicity ti polima pọ si.

Pelu hydrophobicity rẹ, ethyl cellulose tun jẹ ohun elo ti o wulo fun ọpọlọpọ awọn ohun elo, ni pataki ni ile-iṣẹ elegbogi.Iwa hydrophobic rẹ jẹ ki o jẹ ohun elo idena ti o dara julọ fun awọn eto ifijiṣẹ oogun, bi o ṣe le ṣe idiwọ ilaluja ti ọrinrin tabi awọn nkan hydrophilic miiran sinu fọọmu iwọn lilo.Eyi le ṣe iranlọwọ lati daabobo iduroṣinṣin ati ipa ti oogun naa fun igba pipẹ.

Ni akojọpọ, ethyl cellulose jẹ polima hydrophobic nitori wiwa awọn ẹgbẹ ethyl ti kii ṣe pola ninu eto molikula rẹ.Bibẹẹkọ, hydrophobicity rẹ le ṣe atunṣe nipasẹ yiyipada iwọn aropo tabi ṣafikun awọn ẹgbẹ hydrophilic si ọna polymer.Pelu iwa hydrophobic rẹ, ethyl cellulose tun jẹ ohun elo ti o wulo fun ọpọlọpọ awọn ohun elo, ni pataki ni ile-iṣẹ elegbogi.