High strength of hybrid double-network hydrogels imparted
Near the ion-balance point, hybrid DN hydrogels with enhanced strengths were achieved compared to the unmodified PNaAMPS/polyacrylamide (PAM) DN hydrogel. Synchrotron radiation small-angle X-ray scattering (SAXS) analyses were performed on the DN hydrogels.
Biomimetic hydrogels with triple networks have been developed via in situ polymerization and addition of graphene oxide (GO) nanosheets, which achieve improved toughness and superior fatigue resistance, simultaneously. Compared with pristine calcium alginate/polyacrylamide double network (DN) hydrogels, the integration of a calcium-induced graphene oxide network enhances the crosslinking
IONICALLY BALANCED POLYACRYLAMIDE COMPOSITION - Brigance
Examples cited are oil based formulations (liquid concentrates). SUMMARY OF THE INVENTION . The invention involves both a process and a composition for producing an ionically balanced polyacrylamide composition with enhanced performance properties.
Examples cited are oil based formulations (liquid concentrates). SUMMARY OF THE INVENTION [0039] The invention involves both a process and a composition for producing an ionically balanced polyacrylamide composition with enhanced performance properties.
US4510081A - Drift control concentrate
A polymeric drift control concentrate is provided for admixture with an aqueous mixture designed for application to vegetation or soil by aerial or ground spraying or discharge. The concentrate reduces the likelihood that the water or aqueous mixture will drift away from its intended target, and suppresses the formation of dust on the ground.
US20150237851A1 US14/426,878 US201314426878A US2015237851A1 US 20150237851 A1 US20150237851 A1 US 20150237851A1 US 201314426878 A US201314426878 A US 201314426878A US 2015237851 A1 US2015237851 A1 US 2015237851A1 Authority US United States Prior art keywords spray spray liquid guar cellulose hydrophobically modified Prior art date 2012-09-11 Legal status (The legal status is an assumption and
US6423109B2 - Free flowing fertilizer composition with
A free-flowing fertilizer comprising: i) from 25 to 99.5% by weight of a powdered water soluble nitrogen containing fertilizer. ii) from 0.05 to 1.5% by weight of a polyacrylamide liquid emulsion/dispersion. iii) from 0.1 to 3.0% by weight of a polyacrylamide powder whose particle size is primarily 50 to 100 mesh in size.
Fig. 1 depicts the SEM microphotographs of IPN polyspheres (L3: ionically cross-linked polyspheres) and L9 (ionic as well as covalent cross-linked polyspheres). The IPN polyspheres were found to be in spherical shape. It was noticed that ionically cross-linked L3 polyspheres were featured with the presence of rough and dense surface, while the L9 polyspheres formulated by means of ionic as
RESEARCH PAPER Cell wall-bound cationic and anionic class
activity: (i) ionically bound proteins and (ii) covalently bound proteins. Modified SDS–PAGE separated peroxidase isoforms by their apparent molecular weights: four bands of 56, 46, 44, and 41kDa were found in the ionically bound fraction (iPOD) and one band (70kDa) was resolved after treatment of the cell wall with cellulase and pectinase
Leaderless secretion proteins. Plant proteins are secreted to the apoplast mainly via the classical ER-Golgi route. SignalP or TargetP software is widely used to predict signal peptides from the sequences (Emanuelsson et al., 2007; Petersen et al., 2011) and to identify proteins that are secreted through the classical ER-Golgi.However, there is increasing evidence that a subset of apoplastic
1. Introduction - Hindawi Publishing Corporation
The native cartilage is an important part in the human body to carry regular articular functions by adsorbing impact energy, distributing loads, and reducing friction [1 – 4].Traditional approaches including microfracture therapy and periosteal grafting may lead to repeated injury due to poor functions [5 – 7].Therefore, an emerging therapy to repair or replace the injured cartilage by
Polymers, an international, peer-reviewed Open Access journal. Dear Colleagues, Polyelectrolytes are the subject of very active research and development in fields such as chemistry, physics, biology, medicine, materials science, food science, and nanotechnology.
- What are cationic polyacrylamide copolymers?
- Cationic polyacrylamide copolymers (PAMs) are a group of water-soluble polymers with a wide range of applications in industry, food processing, agriculture and waste management. One of the major applications for PAM is sludge dewatering in municipal waste water treatment plants (MWWTPs).
- Are cationic polyacrylamide copolymers harmful to the environment?
- Environ Sci Eur. 2018; 30 (1): 16. Cationic polyacrylamide copolymers (PAMs) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils.
- What is an anionic polyacrylamide?
- Anionic polyacrylamides make up the largest portion of the polyacrylamide market. The polymers can be prepared over a wide range of anionic charges and molecular weights (1000 to > 20,000,000 molecular weight). The workhorse comonomer for the production of anionic polyacrylamides is acrylate salts of acrylic acid.
- What is a cationic polymer?
- Formulae display:?
- Cationic polymers (e.g. polyacrylamide) having a high molecular weight require a much lower dose than inorganic metal salts (e.g. AlCl 3, FeCl 3, or Al 2 (SO 4) 3) to produce dense compact flocs with good settling characteristics.
