Yintoni i-hydroxypropyl starch ethers?

IHydroxypropyl starch ethers (HPStEs) zizinto eziphuma kwisitatshi ezilungisiweyo ezifunyenwe ngokuguqulwa kweekhemikhali zeemolekyuli zesitatshi zendalo, ezisuka kwimithombo efana nombona, ingqolowa, iitapile, okanye i-tapioca. Ii-HPStEs ziveliswa ngokwazisa amaqela e-hydroxypropyl kwi-starch backbone ngokusabela kwe-etherification.

Ubume bemichiza ye-hydroxypropyl starch ethers iqukethe iimolekyuli zesitashi kunye ne-hydroxypropyl (-OCH2CH (OH) CH3) amaqela adityaniswe ne-hydroxyl (-OH) amaqela asebenzayo kunye ne-starch polymer chain. Iqondo lokuthatha indawo (DS), elibhekiselele kumyinge wenani lamaqela e-hydroxypropyl ancanyathiselwe kwiyunithi nganye yeglucose yemolekyuli yesitatshi, inokwahluka ngokuxhomekeke kwiimeko zokusabela kunye neempawu ezifunwayo zemveliso yokugqibela.

I-HPStEs iqhelekile ukuba mhlophe ukuya kumgubo omhlophe-omhlophe oneempawu ezahlukeneyo zomzimba ezifana nobungakanani bamasuntswana, ukuxinana kwesambuku, ukunyibilika, kunye ne-viscosity, enokuthi ilungelelaniswe kwizicelo ezithile kunye neemfuno zokwenziwa. Azinyibiliki emanzini abandayo kodwa ziyakwazi ukusasazeka kwaye zidumbe emanzini ashushu, zenze izisombululo ze-viscous okanye iijeli.

IHydroxypropyl starch ethers ibonisa iipropathi ezininzi ezinqwenelekayo ezizenza zibe zizongezo ezixabisekileyo kuluhlu olubanzi lwezicelo zemizi-mveliso nezorhwebo:

1. Ugcino lwamanzi: Ii-HPStEs zineempawu eziphezulu zokugcina amanzi, nto leyo ezenza ukuba zityebe ngokufanelekileyo kunye nee-agent ezibophelelayo kwimixube efana ne-adhesives, i-coatings, kunye nezinto zokwakha. Banceda ukuphucula ukusebenza, ukumanzisa, kunye nokubambelela kwezi zixhobo.
2. Ukuqina: Ii-HPStEs zisebenza njengee-agent ezityebisayo ezisebenzayo kwiinkqubo ezinamanzi, zinyusa i-viscosity kunye nokuhambelana kwemixube efana neepeyinti, izinto zokuncamathelisa, kunye neemveliso zokhathalelo lomntu. Babonelela ngobume obuphuculweyo, ukuzinza, kunye nokusasazeka kolu qulunqo.
3. Ukuqulunqwa kwefilimu: Ii-HPStEs zinokwenza iifilimu ezicacileyo kunye neziguquguqukayo xa zihlakazwe emanzini, zibenza zibe luncedo kwiingubo, iifilimu, kunye nezicelo zokupakisha. Baphucula ukubunjwa kwefilimu, ukunamathela, kunye neempawu zokuthintela, ukuphucula ukusebenza kunye nokuqina kwemveliso yokugqibela.
4. Ukuzinziswa: I-HPStEs ibonisa ukuzinza okugqwesileyo kwiinkqubo ezinamanzi, ukuthintela ukuhlukana kwesigaba, i-sedimentation, okanye i-coagulation yamasuntswana. Banceda ukugcina ukufana kunye nokuzinza ekuqulunqweni okufana ne-emulsions, ukumiswa, kunye ne-dispersions.
5. I-Biodegradability: Ii-HPStEs zithathwe kwimithombo yesitatshi yendalo kwaye ziyakwazi ukubola, nto leyo ezenza ukuba zibe nobuhlobo ngokusingqongileyo kunye neendlela ezizinzileyo kwizongezo ezenziweyo kwizicelo ezahlukeneyo.
6. Ukuhambelana: I-HPStEs iyahambelana noluhlu olubanzi lwezinye izithako kunye nezongezo ezisetyenziswa ngokuqhelekileyo ekuqulunqweni. Ziyakwazi ukufakwa ngokulula kwiifomyula ukufezekisa iipropati ezifunwayo kunye neempawu zokusebenza.

Ngokubanzi, i-hydroxypropyl starch ethers ibonelela ngezinto ezahlukeneyo, ukusebenza, kunye nozinzo, zizenza izongezo eziyimfuneko kumashishini afana nokwakha, izinto zokuncamathelisa, iingubo, ukhathalelo lomntu, ukutya, kunye namayeza. Iipropati zabo ezahlukeneyo kunye nokusetyenziswa negalelo ekuphuculeni ukusebenza, ukusebenza, kunye nokuzinza kokusingqongileyo kumacandelo awohlukeneyo.