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- What is polyanionic cellulose used for?
- Polyanionic Cellulose (PAC) is a high purity additive used in water and well drilling. It can be applied in fresh water drilling, seawater drilling, and brine water based mud systems. It is easily soluble in water, having excellent properties of salt resistance, Calcium and Magnesium resistance, and reduced filtration loss.
- What is polyanionic cellulose (PAC)?
- Moreover, a type of advanced CMC product with more uniform substitution is usually called polyanionic cellulose (PAC). In our previous studies, we have used both CNF and PAC (carboxyl contents of 1.56 and 3.87 mmol/g, respectively) to fabricate composited polyacrylamide (PAM) hydrogels treated by Fe (III) and Zr (IV) species, respectively.
- 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.
- 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.
