Sidee urta hydroxypropyl methylcellulose u saameysaa tayada?

Waa maxay saamaynta cabbirka urtu ku leeyahay hydroxypropyl methylcellulose:

Isku-darkahydroxypropyl methylcellulose: Ku daawee cellulose-ka suufka la safeeyey lye heerkul ah 35-40°C nus saac, riix, burburi cellulose-ka, oo si habboon u da'da 35°C, si heerka celceliska polymerization-ka ee alkali-ga la helay uu ugu jiro fiilooyinka loo baahan yahay gudaha. Faybarka alkali-ga geli digsiga etherification-ka, ku dar propylene oxide iyo methyl chloride si isku xigxig ah, oo etherify 50-80°C muddo 5 saacadood ah, cadaadiska ugu badan waa qiyaastii 1.8MPa. Kadib ku dar xaddi ku habboon oo ah hydrochloric acid iyo oxalic acid biyaha kulul 90°C si aad u dhaqdo walxaha si loo ballaariyo mugga. Ku qoy centrifuge. Ku dhaq biyo ilaa dhexdhexaad ah. Marka qoyaanka maaddada uu ka hooseeyo 60%, ku qalaji hawo kulul 130°C ilaa qoyaanku ka hooseeyo 5%.

HPMC-ga oo ay soo saarto habka dareeraha wuxuu u adeegsadaa toluene iyo isopropanol sidii dareereyaal. Haddii dhaqiddu aysan fiicnayn, ur yar ayaa sii jiri doona. Waqtigan xaadirka ah, tayada hydroxypropyl methylcellulose HPMC ee gudaha ayaa aad u kala duwan, qiimuhuna si weyn ayuu u kala duwan yahay, taasoo ka dhigaysa mid adag in macaamiishu ay sameeyaan doorashada saxda ah. Tani waa dhibaatada habka dhaqidda, saameyn kuma yeelato isticmaalka mana jirto dhibaato, HPMC saafi ah waa inaysan urin ammonia, istaarijka iyo khamriga;HPMCBadanaa waxay urin kartaa nooc kasta oo ur ah, xitaa haddii aysan dhadhan lahayn, waxay dareemi doontaa culeys. Si kastaba ha ahaatee, hydroxypropyl methylcellulose oo ay soo saaraan soosaarayaal badan ayaa leh ur gaar ah oo xooggan iyo ur daran. Tayadu hubaal ma ahan mid la mid ah.

Hypromellose waxaa lagu helaa iyadoo lagu shubo suuf la safeeyey oo leh dareere naadir ah si loo helo cellulose alkaline ah, ka dibna lagu daro dareere, wakiil etherification, toluene, iyo isopropanol si loogu falceliyo etherification, laga dhigo mid dhexdhexaad ah oo lagu dhaqo, lagu qalajiyo, lagu burburiyo, iwm. si loo helo alaabada la dhammeeyey. Hagaag, waxaa jiri doona ur, si dadka isticmaala ay si kalsooni leh ugu isticmaali karaan.