Cellulose ether wani muhimmin abu ne na polymer wanda aka yi amfani dashi sosai a cikin kayan gini, magani, abinci da sauran fannoni. Kayan ajiyar ruwa yana ɗaya daga cikin mahimman abubuwan da ke da tasiri a aikace-aikace da yawa. Ayyukan riƙe ruwa kai tsaye yana rinjayar mannewa, ductility da aikin ginin kayan. Matsayin etherification da zafin jiki na ether cellulose sune mahimman bayanai guda biyu waɗanda ke shafar riƙewar ruwa.
Tasirin digiri na etherification na ether cellulose akan riƙe ruwa
Ana samar da ethers na cellulose ta hanyar canza ɓangaren hydroxyl na cellulose zuwa ƙungiyoyin ether. Matsayin etherification yana nufin adadin ƙungiyoyin ether da aka gabatar akan kowane rukunin glucose, wanda ake amfani dashi don auna matakin maye gurbin ethers cellulose. Matsayin etherification yana da tasiri mai mahimmanci akan riƙewar ruwa na ethers cellulose. Gabaɗaya magana, yayin da ƙimar etherification ke ƙaruwa, haɓakar hydrophilicity na ether cellulose yana ƙaruwa, aikin riƙewar ruwa kuma yana ƙaruwa.
Mafi girman matakin etherification, yawancin ƙungiyoyin hydrophilic (kamar methoxy, ethoxy, da dai sauransu) an gabatar da su a cikin sarkar kwayoyin ether cellulose. Wadannan kungiyoyi zasu iya yin hulɗa tare da kwayoyin ruwa ta hanyar haɗin hydrogen, suna ƙarfafa cellulose Ƙarfin adsorption na ether zuwa kwayoyin ruwa. Sabili da haka, ethers cellulose tare da digiri na etherification mafi girma na iya sha da kuma riƙe da ruwa mai yawa a cikin yanayi mai laushi, yana sa su zama masu kyau a cikin abubuwan riƙe ruwa.
Koyaya, mafi girman matakin etherification, mafi kyau. Lokacin da matakin etherification ya kai wani matakin, riƙewar ruwa na ether cellulose na iya daina ci gaba da karuwa tare da karuwa a cikin digiri na etherification, kuma yana iya raguwa. Wannan shi ne saboda lokacin da etherification ya yi yawa, tsarin sarkar kwayoyin ether cellulose na iya canzawa, wanda zai haifar da rauni na karfin intermolecular, wanda zai shafi shayar da ruwa da kuma riƙe ruwa. Sabili da haka, a cikin aikace-aikace masu amfani, ethers cellulose tare da matakan etherification masu dacewa suna buƙatar zaɓar bisa ga takamaiman yanayi.
Tasirin zafin jiki akan riƙe ruwa na ethers cellulose
Zazzabi wani abu ne wanda ke da tasiri mai mahimmanci akan riƙewar ruwa na ethers cellulose. A ƙarƙashin yanayi daban-daban na zafin jiki, abubuwan riƙewar ruwa na ethers cellulose suna nuna hali daban. A al'ada, karuwar yawan zafin jiki zai haifar da raguwa a cikin riƙewar ruwa na ethers cellulose. Wannan shi ne yafi saboda hauhawar yanayin zafi yana hanzarta fitar da ruwa, yana sa abu ya yi wahala don riƙe danshi.
A ƙananan yanayin zafi, hulɗar tsakanin kwayoyin ether cellulose da kwayoyin ruwa ya fi karfi, yana haifar da mafi kyawun riƙe ruwa. Yayin da zafin jiki ya ƙaru, ƙwayoyin ruwa suna ƙafe da sauri, kuma ƙarfin riƙe ruwa na ether cellulose yana raguwa a hankali. Bugu da ƙari, ƙara yawan zafin jiki na iya rinjayar solubility na ethers cellulose. Ƙarƙashin wasu yanayin zafi mai zafi, ether cellulose na iya rasa narkewa kuma ya kasa samar da mafita guda ɗaya ko colloid, don haka yana shafar aikin riƙewar ruwa.
Yana da mahimmanci a lura cewa nau'ikan ethers na cellulose daban-daban suna da hankali daban-daban ga canje-canjen zafin jiki. Wasu ethers cellulose na iya ci gaba da kiyaye ruwa mai kyau a yanayin zafi mafi girma, yayin da wasu za su fuskanci raguwa mai yawa a cikin ruwa lokacin da zafin jiki ya tashi kadan. Sabili da haka, lokacin zabar ether cellulose, ya zama dole don yin zaɓin da ya dace dangane da yanayin zafin yanayi na yanayin amfani.
Ma'amala tsakanin digiri na etherification da zafin jiki
Sakamakon digiri na etherification da zafin jiki akan riƙewar ruwa na ether cellulose sau da yawa suna hulɗa. A aikace aikace, waɗannan abubuwa biyu galibi suna buƙatar yin la'akari da su gabaɗaya. Misali, lokacin da ake amfani da ether cellulose tare da babban matakin etherification a cikin yanayin zafi mai zafi, kodayake babban matakin etherification na iya haɓaka riƙewar ruwa na ether cellulose, ƙimar ƙashin ruwa a cikin yanayin zafi mai zafi shima zai kasance. hanzarta yadda ya kamata, don haka yana raunana ainihin tasirin ruwan sa. Sabili da haka, a cikin yanayin zafi mai zafi, yana iya zama dole a yi amfani da ethers cellulose tare da gyare-gyare na musamman don inganta yanayin zafi da kuma riƙe ruwa.
Akasin haka, a cikin ƙananan yanayin zafi, tasirin etherification digiri akan riƙewar ruwa na ether cellulose na iya zama mafi bayyane. A ƙarƙashin ƙananan yanayin zafi, ruwa yana ƙafe sannu a hankali, kuma ether cellulose tare da babban matakin etherification na iya yin cikakken ƙarfin ikon shayar da ruwa, don haka inganta aikin riƙe ruwa na kayan.
Matsayin etherification da zafin jiki na ether cellulose sune mahimman abubuwan da ke shafar aikin riƙewar ruwa. Matsayi mafi girma na etherification, mafi ƙarfin hydrophilicity na ether cellulose kuma mafi kyawun aikin riƙewar ruwa. Duk da haka, babban matakin etherification na iya haifar da canje-canje a cikin tsarin kwayoyin halitta, ta haka yana rinjayar riƙewar ruwa. Hawan zafin jiki yawanci yana haifar da raguwar riƙewar ruwa na ethers cellulose. Musamman a cikin yanayin zafi mai zafi, ƙawancen ruwa yana haɓaka, yana tasiri tasirin riƙewar ruwa. A cikin aikace-aikacen aikace-aikacen, ya zama dole don zaɓar ether cellulose tare da matakin da ya dace na etherification dangane da ƙayyadaddun yanayin zafin jiki da buƙatun amfani don cimma mafi kyawun tasirin ruwa.
Lokacin aikawa: Satumba-18-2024