Overshooting effect of poly(dimethylaminoethyl methacrylate) hydrogels

Li, Cancan; Xu, Ling; Zhai, Maolin; Peng, Jing; Li, Jiuqiang

doi:10.1002/app.33328

Cited by 27 publications

(32 citation statements)

References 32 publications

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“…Poly(dimethylaminoethyl methacrylate) (PDMAEMA) is an important stimuli‐sensitive polymer because of its temperature‐ and pH‐stimulus‐responsive phase‐transition behaviors. Plenty of research studies concerned with the synthesis and characterization of PDMAEMA‐based gels and their applications in controlled release systems and heavy‐metal‐ion adsorption have been done in our group and other colleague groups . In our previous study, PDMAEMA hydrogels were prepared by γ‐ray radiation crosslinking.…”

Section: Introductionmentioning

confidence: 99%

Temperature‐, pH‐, and ion‐stimulus‐responsive swelling behaviors of poly(dimethylaminoethyl methacrylate) gel containing cholic acid

Wang

Gao

et al. 2013

J of Applied Polymer Sci

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Poly(dimethylaminoethyl methacrylate) hydrogels containing cholic acid (PDMAEMA-CA) were synthesized by radiation crosslinking. The introduction of 10 and 20 mol% cholic acid (CA) into the poly(dimethylaminoethyl methacrylate) (PDMAEMA) hydrogel decreased the maximum swelling ratio (SR) of the gel from 40 to 6 and 5, respectively. The incorporation of CA with dimethylaminoethyl methacrylate led to a decrease in the lower critical swelling temperature of the gel from 44 to 42 C but did not exert big influence on the ion-stimulus-responsive properties of the gel. However, the pH sensitivity of the PDMAEMA-CA gel was quite different from that of PDMAEMA gel. The SR of PDMAEMA gel decreased at pH 2.5, whereas the SRs of the PDMAEMA-CA gels showed a convex-upward function of pH; that is, SR of the PDMAEMA-10% CA gel first increased (pH 1.2-3.2) and then decreased (pH 3.2-11.9) with increasing pH. The pH-stimulus-responsive swelling behavior of the PDMAEMA-20% CA gel was similar to that of the PDMAEMA-10% CA gel except for the unique swelling behavior exhibited in the lower pH region. The unique decrease in SR in strong acidic solutions was attributed to aggregations driven by the hydrophobic interactions between CA molecules. Phase separation of the gel in strongly acidic solutions was observed; that is, the margin of the swollen gel was transparent and elastic (cellular structure), whereas the core of it was opaque (aggregated structure) as recorded by scanning electron microscopy. V C 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39998.

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Section: Introductionmentioning

confidence: 99%

Temperature‐, pH‐, and ion‐stimulus‐responsive swelling behaviors of poly(dimethylaminoethyl methacrylate) gel containing cholic acid

Wang

Gao

et al. 2013

J of Applied Polymer Sci

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“…Using the data in Fig. The overshooting might originate from the combination of the membrane structural factors such as chemical composition and processing conditions, which have also been observed in membrane of ethylene-chlorotrifluoroethylene copolymer [29] and poly(dimethylaminoethyl methacrylate) hydrogels [30] . 8.…”

Section: Urea-nah 2 Po 4 Solution In Watermentioning

confidence: 84%

“…This two-stage phenomenon of permeability with time was called overshooting, implying that formation of the thermodynamically non-stable supersaturated space could accommodate more permeate molecules into the polymer matrix during the relaxation process of the transient permeation. The overshooting might originate from the combination of the membrane structural factors such as chemical composition and processing conditions, which have also been observed in membrane of ethylene-chlorotrifluoroethylene copolymer [29] and poly(dimethylaminoethyl methacrylate) hydrogels [30] .…”

Section: Urea-nah 2 Po 4 Solution In Watermentioning

confidence: 90%

Permeation of fertilizer nutrients through polymer membrane: part I. Effect of P, K, and micronutrient fertilizer on permeability of urea

Liu

Sun

et al. 2016

Asia-Pacific J Chem Eng

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The study aimed at investigating the addition effects of P, K, and micronutrient fertilizers on the permeability of N-nutrient fertilizer urea through a representative polymer membrane, which is of great importance in polymer-coated compound fertilizer. Specifically, the permeability of urea through polystyrene membrane was determined experimentally at the nominal temperature of 298 K using the Ussing chamber method for fertilizer solutions of urea-water, urea-NaH 2 PO 4 -water, urea-Ca(H 2 PO 4 ) 2 -water, urea-KCl-water, and urea-NaCl-water. The experimental data showed that the addition effects of NaH 2 PO 4 , KCl, and NaCl on urea permeability were pronounced and could be promotion or suppression depending on the amounts added. The variation of urea permeability with additive concentration could be explained by the 'solution-diffusion' model, suggesting that the specific intermolecular and interionic interactions in the permeation solution were an important factor determining the permeability. Using the saturated urea-water solution as basis, the addition of saturated KCl increased the urea permeability by 2.5 times, while the addition of saturated Ca(H 2 PO 4 ) 2 and NaH 2 PO 4 decreased the permeability by 41% and 76%, respectively.

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“…Figure 1 shows the typical FT-IR spectra of TPG, DMAEMA, and DMA(OH) 2 Note that a new peak appeared at 1570 cm −1 further indicate the structure of DMA(OH) 2 , since it is attributed to the vibration caused by the coordination of the free electron pair of the tertiary amino group with the carboxyl group. 32 In addition, the spectral feature of C−O in TPG at low wavenumber is reserved in that of DMA(OH) 2 . Figure 2 shows the 1 H NMR spectra of TPG, DMAEMA, and DMA(OH) 2 .…”

Section: ■ Results and Discussionmentioning

confidence: 99%

A Novel Approach for Synthesis of Zwitterionic Polyurethane Coating with Protein Resistance

Wang

Mu³

et al. 2014

Langmuir

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We have developed a novel approach to introduce zwitterions into polyurethane for the preparation of antibiofouling coating. First, the thiol-ene click reaction between 2-(dimethylamino)ethyl methacrylate (DMAEMA) and 3-mercapto-1,2-propanediol (TPG) is used to synthesize dihydroxy-terminated DMAEMA (DMA(OH)2) under UV catalysis. The product has been proved by gel permeation chromatography (GPC), Fourier transform infrared spectrum (FT-IR), proton nuclear magnetic resonance ((1)H NMR), and high resolution mass spectrometry (HRMS). DMA(OH)2 is then incorporated into polyurethane as side groups by polyaddition with diisocyanate and further reacts with 1,3-propane sultone to obtain the zwitterionic polyurethanes. The presence of sulfobetaine zwitterions side groups has been demonstrated by FT-IR and X-ray photoelectron spectroscopy (XPS). Thermal analysis indicates that the thermal stability is decreased with the increasing content of zwitterionions. The antibiofouling property of polyurethanes has been investigated by the measurement of adsorption of fibrinogen, bovine serum albumin (BSA), and lysozyme on the polyurethanes surface using quartz crystal microbalance with dissipation (QCM-D). The results show that the polyurethane coatings exhibit effective nonspecific protein resistance at higher content of zwitterionic side groups.

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Overshooting effect of poly(dimethylaminoethyl methacrylate) hydrogels

Cited by 27 publications

References 32 publications

Temperature‐, pH‐, and ion‐stimulus‐responsive swelling behaviors of poly(dimethylaminoethyl methacrylate) gel containing cholic acid

Temperature‐, pH‐, and ion‐stimulus‐responsive swelling behaviors of poly(dimethylaminoethyl methacrylate) gel containing cholic acid

Permeation of fertilizer nutrients through polymer membrane: part I. Effect of P, K, and micronutrient fertilizer on permeability of urea

A Novel Approach for Synthesis of Zwitterionic Polyurethane Coating with Protein Resistance

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