Anyị isi ngwaahịa: Amino silicone, ngọngọ silicone, hydrophilic silicone, ha niile silicone emulsion, wetting rubbing fastness enhancer, mmiri na-egbochi (Fluorine free, Carbon 6, Carbon 8), demin na-asa chemicals (ABS, Enzyme, Spandex echebe, Manganese remover) ， ihe nkowa biko kpọtụrụ: Mandy 6816 (18856).
Okwu mmalite nke Surfactants
Surfactants nwere usoro ihe omimi nke amphiphilic: otu njedebe nwere otu hydrophilic, nke a na-akpọ isi hydrophilic, ebe njedebe nke ọzọ nwere otu hydrophobic, nke a maara dị ka ọdụ hydrophobic. Isi hydrophilic na-enye ohere ka ndị surfactants gbazee na mmiri n'ụdị monomer ha.
Otu hydrophilic na-abụkarị otu polar, nke nwere ike ịbụ otu carboxyl (-COOH), otu sulfonic acid (-SO3H), otu amino (-NH2), amines na salts ha, hydroxyl otu (-OH), otu amide, ma ọ bụ ether linkages (-O-) dị ka ihe atụ ndị ọzọ nke polar hydrophilic otu.
Otu hydrophobic na-abụkarị ụdọ hydrocarbon na-abụghị polar, dị ka ụdọ alkyl hydrophobic (R-maka alkyl) ma ọ bụ otu aromatic (Ar-for aryl).
Enwere ike ịkewa ihe ndị dị n'elu ka ọ bụrụ ionic surfactants (gụnyere cationic na anionic surfactants), ihe ndị na-abụghị ionic surfactants, amphoteric surfactants, surfactants agwakọta, na ndị ọzọ. Na ngwọta nke surfactant, mgbe ntinye nke surfactant ruru otu uru, ụmụ irighiri ihe ndị dị n'elu ga-emepụta nchịkọta dị iche iche nyere iwu nke a maara dị ka micelles. Usoro nke micellization, ma ọ bụ nhazi micelle, bụ ihe dị mkpa dị mkpa nke ngwọta surfactant, n'ihi na ọtụtụ ihe dị mkpa dị n'etiti ihu na-ejikọta na nhazi nke micelles.
A na-akpọ ntinye uche nke ndị surfactants na-etolite micelles na ngwọta dị ka Critical Micelle Concentration (CMC). Micelles adịghị edozi, okirikiri okirikiri; kama, ha na-egosipụta oke adịghị mma na mgbanwe ọdịdị dị ike. N'okpuru ọnọdụ ụfọdụ, ndị surfactants nwekwara ike igosipụta steeti micelle ọzọ.
Ihe na-emetụta CMC:
- Ọdịdị nke surfactant
- Ụdị na ọnụnọ nke mgbakwunye
- Okpomọkụ
Mmekọrịta dị n'etiti Surfactants na protein
Protein nwere ndị na-abụghị polar, polar, na chaja, na ọtụtụ mkpụrụ ndụ amphiphilic nwere ike imekọrịta ihe na protein n'ụzọ dị iche iche. Dabere na ọnọdụ, surfactants nwere ike ịmepụta mkpokọta haziri ahazi nke nwere usoro dị iche iche, dị ka micelles ma ọ bụ micelle ndị ọzọ, nke na-emekọrịta ihe n'ụzọ dị iche na protein.
Mmekọrịta dị n'etiti protein na surfactants (Protein-Surfactant, PS) na-agụnye mmekọrịta electrostatic na mmekọrịta hydrophobic. Ionic surfactants na-emekọrịta ihe na ndị na-edozi ahụ tumadi site na ike electrostatic nke otu polar na mmekọrịta hydrophobic nke aliphatic carbon chain, na-ejikọta na mpaghara polar na hydrophobic nke protein, si otú a na-emepụta ogige PS.
Ndị na-abụghị ionic surfactants na-akpakọrịta na protein site na ike hydrophobic, ebe agbụ hydrophobic na mpaghara hydrophobic nke protein. Mmekọrịta ahụ nwere ike imetụta ma nhazi na ọrụ nke surfactant na protein. Ya mere, ụdị na itinye uche nke surfactants, yana gburugburu gburugburu ebe obibi, na-ekpebi ma ndị surfactants na-eme ka protein dị ike ma ọ bụ na-emebi emebi, yana ma ha na-akwalite nchịkọta ma ọ bụ mgbasa.
Uru HLB nke Surfactants
Maka surfactant iji gosipụta ọrụ interfacial pụrụ iche, ọ ga-edozirịrị akụkụ hydrophobic na hydrophilic. HLB (Hydrophile-Lipophile Balance) bụ ihe nleba anya nke hydrophilic-lipophilic itule nke surfactants ma na-eje ozi dị ka ihe nrịbama nke ihe hydrophilic na hydrophobic surfactants.
Uru HLB bụ ọnụ ahịa ikwu (site na 0 ruo 40). Dịka ọmụmaatụ, paraffin nwere uru HLB nke 0 (enweghị akụkụ hydrophilic), polyethylene glycol nwere uru HLB nke 20, na SDS nke ukwuu hydrophilic (sodium dodecyl sulfate) nwere uru HLB nke 40. Ọnụ ego HLB nwere ike ịrụ ọrụ dịka ntụziaka nduzi mgbe ị na-ahọrọ surfactants. Uru HLB dị elu na-egosi hydrophilicity ka mma, ebe uru HLB dị ala na-egosi hydrophilicity ka njọ.
Oge nzipu: Sep-10-2024