Preparation of Amphoteric Microgels of Poly(acrylamide/methacrylic acid/dimethylamino ethylene methacrylate) with a Novel pH−Volume Transition

2007 ◽  
Vol 40 (17) ◽  
pp. 6370-6376 ◽  
Author(s):  
Henmei Ni ◽  
Haruma Kawaguchi ◽  
Takeshi Endo
Keyword(s):  
Methacrylic Acid ◽  
Volume Transition ◽  
Poly Acrylamide

scholarly journals Investigation of the Effects of Polymer Dispersants on Dispersion of GO Nanosheets in Cement Composites and Relative Microstructures/Performances

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 964 ◽  
Author(s):  
Shenghua Lv ◽  
Haoyan Hu ◽  
Yonggang Hou ◽  
Ying Lei ◽  
Li Sun ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Uniform Distribution ◽  
Methacrylic Acid ◽  
Cement Composites ◽  
Polar Groups ◽  
And Performance ◽  
Microstructure And Performance ◽  
Poly Acrylonitrile ◽  
Poly Acrylamide

This study focused on the uniform distribution of graphene oxide (GO) nanosheets in cement composites and their effect on microstructure and performance. For this, three polymer dispersants with different level of polar groups (weak, mild, and strong) poly(acrylamide-methacrylic acid) (PAM), poly(acrylonitrile-hydroxyethyl acrylate) (PAH), and poly(allylamine-acrylamide) (PAA) were used to form intercalation composites with GO nanosheets. The results indicated that GO nanosheets can exist as individual 1–2, 2–5, and 3–8 layers in GO/PAA, GO/PAH, and GO/PAM intercalation composites, respectively. The few-layered (1–2 layers) GO can be uniformly distributed in cement composites and promote the formation of regular-shaped crystals and a compact microstructure. The compressive strengths of the blank, control, GO/PAM, GO/PAH, and GO/PAA cement composites were 55.72, 78.31, 89.75, 116.82, and 128.32 MPa, respectively. Their increase ratios relative to the blank sample were 40.54%, 61.07%, 109.66%, and 130.29%, respectively. Their corresponding flexural strengths were 7.53, 10.85, 12.35, 15.97, and 17.68 MPa, respectively, which correspond to improvements of 44.09%, 64.01%, 112.09%, and 134.79%.

Quasi-static particle formation of poly(acrylamide/methacrylic acid) in ethanol by using V-65 as initiator

2010 ◽  
Vol 1 (6) ◽  
pp. 899 ◽  
Author(s):  
Ni Henmei ◽  
Min Wu ◽  
Min Li ◽  
Hualin Wang ◽  
Yueming Sun
Keyword(s):  
Methacrylic Acid ◽  
Particle Formation ◽  
Poly Acrylamide

Structural, thermal and morphological properties of a novel poly(acrylamide-co-methacrylic acid)/organoclay nanocomposite

2016 ◽  
Vol 47 (3) ◽  
pp. 360-364 ◽  
Author(s):  
Bulent Caglar ◽  
Fatih Coldur ◽  
Sema Caglar ◽  
Osman Cubuk ◽  
Ahmet Tabak ◽  
...  
Keyword(s):  
Methacrylic Acid ◽  
Morphological Properties ◽  
Poly Acrylamide
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