Specific heat of carboxymethyl cellulose and Carbopol aqueous solutions

Semmar, Nadjib; Tanguier, J.L.; Rigo, M. O.

doi:10.1016/s0040-6031(02)00611-1

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…The comparison is done for a 1 mm drop of 1 wt % of carboxymethylcellulose (CMC) solution (a pseudoplastic) . The necessary property information used to conduct the simulations for this material is provided in Table S2 and refs and . The results confirm an excellent match between the simulation results and the experimental data.…”

Section: Resultsmentioning

confidence: 56%

3D Printed Microdroplet Curing: Unravelling the Physics of On-Spot Photopolymerization

Sivasankar

Sachar

Sinha

et al. 2020

ACS Appl. Polym. Mater.

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Droplet-based direct-write printing (one form of 3D printing) methods, like inkjet printing, aerosol jet printing (AJP), etc., have changed our ideas about bottom-up additive manufacturing. AJP is capable of 3D printing by depositing microdroplets that lead to certain benefits in 3D printing of microscale structures. Here, we study the in situ photopolymerization-based curing of a microdroplet. The droplet is simultaneously spreading and curing, which leads to the rise of two time scales, the spreading time scale (τs) and the photopolymerization time scale (τp). When τs ≪ τp, the spreading occurs very fast and is independent of polymerization. If the time scales are of the same order (τs ∼ τp), the spreading is significantly affected by the polymerization. For this case, a progressive increase in the viscosity of the drop during the spreading ensures a much slower spreading and also a much weaker extent of spreading (i.e., the spreading ceases at a much smaller spreading radius of the drop). This complex thermofluidics is eventually manifested as distinct differences in the time-dependent velocity, temperature, and curing (or equivalently, monomer concentration) profiles within the drop between the two cases.

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Section: Resultsmentioning

confidence: 56%

3D Printed Microdroplet Curing: Unravelling the Physics of On-Spot Photopolymerization

Sivasankar

Sachar

Sinha

et al. 2020

ACS Appl. Polym. Mater.

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“…There are many methods to determine specific heat capacity [37]. The widespread ways are calorimetric measurements [38][39][40][41][42] and law of cooling [43][44][45][46]. As a more accurate and convenient method, the "cooling method" is employed to measure the specific heat of the hybrid nanofluids at various temperatures and nanoparticle mass fractions.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of specific heat of aqueous graphene oxide Al2O3 hybrid nanofluid

Gao

Yang

et al. 2021

THERM SCI

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The specific heat of aqueous graphene+Al 2 O 3 (1:1) hybrid nanofluid was measured using the cooling method. The influence of nanoparticle mass fraction and temperature on the specific heat capacity of the hybrid nanofluids was investigated, the specific heat of the hybrid nanofluid was compared with that of aqueous graphene oxide nanofluid and Al 2 O 3 nanofluid. A fitted formula of the specific heat of the hybrid nanofluid was proposed based on the experimental data. It indicates that the specific heat reduction ratio increases with increase of nanoparticle fraction; the maximum reduction ratio is 7% at 0.15wt% at 20 °C. The mass fraction of nanoparticle affects the specific heat of hybrid nanofluid more significantly at lower temperature. Temperature impacts the specific heat more distinctly than the nanoparticle fraction. The specific heat increases with temperature and the maximum specific heat reduction ratio of the hybrid nanofluid diminishes from 7 % at 20 °C to 2% at 70 °C at the mass fraction of 0.05%.

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Comparison of Electrocalorimetric and Cooling Methods to Determine Specific Heat of Aqueous Solutions of the Sodium Salt Carboxymethylcellulose

Prałat

2015

Arab J Sci Eng

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Specific heat of carboxymethyl cellulose and Carbopol aqueous solutions

Cited by 4 publications

References 5 publications

3D Printed Microdroplet Curing: Unravelling the Physics of On-Spot Photopolymerization

3D Printed Microdroplet Curing: Unravelling the Physics of On-Spot Photopolymerization

Experimental investigation of specific heat of aqueous graphene oxide Al2O3 hybrid nanofluid

Comparison of Electrocalorimetric and Cooling Methods to Determine Specific Heat of Aqueous Solutions of the Sodium Salt Carboxymethylcellulose

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