pac (polyanionic cellulose) shanghai trustin chemical co in luxembourg

pac (polyanionic cellulose) shanghai trustin chemical co in luxembourg
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  • What is polyanionic cellulose?
  • Polyanionic cellulose (PAC), a common drilling fluid additives, which has similar molecular structure as carboxymethyl cellulose (CMC) but superior to CMC in filtration reduction, anti-salt, anti-collapse and high temperature resistance.
  • How was Pac synthesized?
  • PAC with the degree of substitution (DS) of 0.91 (equal to 3.87 mmol/g) was synthesized through modified carboxymethylation of cellulose, as described in our previous paper . Iron (III) chloride hexahydrate (FeCl 3 ·6H 2 O) was purchased from Tianjin Fuchen Chemical Factory, China. Acrylamide (AM, 98%) was supplied by Mitsui Chemicals, Japan.
  • Are polyanionic cellulose and hydration products important in cement contamination?
  • Multiple cementing practices of Sichuan and Chongqing have proved that polyanionic cellulose (PAC) and hydration products of clinker were important factors in cement contamination.
  • What is Pam/PAC-Fe(III) polyacrylamide/polyanionic cellulose composite physical hydrogel?
  • In this work, a series of Fe (III)-crosslinked polyacrylamide/polyanionic cellulose composite physical hydrogels [PAM/PAC-Fe (III)] were firstly prepared via polymerizing acrylamide in PAC solution free of chemical crosslinkers, and followed by posttreatment in 0.1 M iron chloride solution.