Measure of microhardness, fracture toughness and flexural strength of N-vinylcaprolactam (NVC)-containing glass-ionomer dental cements

Moshaverinia, Alireza; Brantley, William A.; Chee, Winston W.L.; Rohpour, Nima; Ansari, Sahar; Zheng, Fengyuan; Heshmati, Reza H.; Darr, Jawwad A.; Schricker, Scott R.; Rehman, Ihtesham Ur

doi:10.1016/j.dental.2010.08.002

Cited by 28 publications

(18 citation statements)

References 27 publications

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“…Contreras‐García et al also found a carbonyl peak, (amide I band) at 1618 cm −1 for PNVCL . The CC bond stretching vibration, corresponding to olefinic stretching, is usually found in the region of 1680–1630 cm −1 . The corresponding CC peak of the monomer was found at 1654 cm −1 , while it disappeared in the spectrum of the polymer indicating the absence of any unreacted monomer.…”

Section: Resultsmentioning

confidence: 91%

Synthesis and characterization of physically crosslinked N‐vinylcaprolactam, acrylic acid, methacrylic acid, and N,N‐dimethylacrylamide hydrogels

Gaballa

Geever

Killion

et al. 2013

J Polym Sci B Polym Phys

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Physically crosslinked hydrogels based on N‐vinylcaprolactam/acrylic acid and N‐vinylcaprolactam/methacrylic acid were prepared via free radical polymerization. These temperature responsive hydrogels were characterized in terms of glass transition, phase separation temperature, potentiometric titration and swelling properties. Results showed that phase transition temperature was dependent on the pH value of the solution; increasing pH led to higher lower critical solution temperature (LCST) values which was related to the dissociative behaviors of the carboxylic group of MAc in the buffered solutions. Additionally, with the incorporation of N,N‐dimethylacrylamide into the system, cloud point measurements and MDSC showed an increased in the LCST. This increase was based on hydrophilicity, the hydrophilic–hydrophobic balance was disturbed, and consequently, the LCST behavior was shifted. The pKa of the copolymers ranged between 5.6 and 6.5, while for the terpolymers pKa ranged between 5.3 and 6. At high pH (>10), the COOH group is deprotonated and negatively charged (COO−), while at low pH (1–3) the carboxylic group remains protonated which results in hydrogen bonding between the hydroxyl groups (from NaOH) and the excess of HCl. These results correlate with swelling studies where above the pKa value the hydrogels dissolved rapidly compared to below pKa they did not dissolve at all. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013, 51, 1555–1564

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Section: Resultsmentioning

confidence: 91%

Synthesis and characterization of physically crosslinked N‐vinylcaprolactam, acrylic acid, methacrylic acid, and N,N‐dimethylacrylamide hydrogels

Gaballa

Geever

Killion

et al. 2013

J Polym Sci B Polym Phys

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show abstract

“…The present results are in accordance with these previous studies. Eventually, microhardness might be used as an indicator of the overall strength or resistance to fracture (29).…”

Section: Discussionmentioning

confidence: 99%

Effect of Ethylenediaminetetraacetic Acid on Root Fracture with Respect to Concentration at Different Time Exposures

Uzunoğlu¹,

Aktemur²,

Uyanık³

et al. 2012

Journal of Endodontics

108

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“…In addition, the NVCL-containing terpolymer has the ability to enhance the surface properties of conventional GIC dental cements such as contact angle, surface chemistry, and work of adhesion. Other properties enhanced are compressive strength (CS), diametral tensile strength (DTS), and biaxial flexural strength (BFS), all compared to the unmodified cement [288][289][290]. In addition, this same group investigated the effects of application of ultrasound on the physical properties of the terpolymer mentioned above.…”

Section: Dental Applicationsmentioning

confidence: 99%

Poly(N-vinylcaprolactam), a comprehensive review on a thermoresponsive polymer becoming popular

Cortez-Lemus

Licea‐Claveríe

2016

Progress in Polymer Science

325

327

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Measure of microhardness, fracture toughness and flexural strength of N-vinylcaprolactam (NVC)-containing glass-ionomer dental cements

Cited by 28 publications

References 27 publications

Synthesis and characterization of physically crosslinked N‐vinylcaprolactam, acrylic acid, methacrylic acid, and N,N‐dimethylacrylamide hydrogels

Synthesis and characterization of physically crosslinked N‐vinylcaprolactam, acrylic acid, methacrylic acid, and N,N‐dimethylacrylamide hydrogels

Effect of Ethylenediaminetetraacetic Acid on Root Fracture with Respect to Concentration at Different Time Exposures

Poly(N-vinylcaprolactam), a comprehensive review on a thermoresponsive polymer becoming popular

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