Effect of calcium carbonate particle size and surface pretreatment on polyurethane composite Part I: interface and mechanical properties

Vrsaljko, Domagoj; Blagojević, Sanja Lučić; Leskovac, Mirela; Kovačević, Vera

doi:10.1179/143307508x270820

Cited by 19 publications

(16 citation statements)

References 14 publications

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“…d − x 1 d ) as well (Table 6). In order to obtain the optimal adhesion, SFE of interphase should be minimal (tends to zero), work of adhesion should be maximal and wetting coefficient should be as close to zero or positive [9,20,26,[54][55][56]. Figure 3 shows an adhesion performance results and rank of all investigated combinations for the above mentioned parameters.…”

Section: Adhesion Performance Based On Surface Free Energiesmentioning

confidence: 99%

Enhancement of Polyvinyl Acetate (PVAc) Adhesion Performance by SiO2 and TiO2 Nanoparticles

et al. 2019

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Post press processes include various types of bonding and adhesives, depending upon the nature of adherends, the end use performance requirements and the adhesive bonding processes. Polyvinyl acetate (PVAc) adhesive is a widely used adhesive in the graphic industry for paper, board, leather and cloth. In this study, the enhancement of PVAc adhesion performance by adding different concentrations (1%, 2% and 3%) of silica (SiO2) and titanium dioxide (TiO2) nanoparticles was investigated. The morphology of investigated paper-adhesive samples was analyzed by SEM microscopy and FTIR spectroscopy. In addition, the optimal adhesion at the interface of paper and adhesive was found according to calculated adhesion parameters by contact angle measurements (work of adhesion, surface free energy of interphase, wetting coefficient). According to obtained surface free energy (SFE) results, optimum nanoparticles concentration was 1%. The wettability of the paper-adhesive surface and low SFE of interphase turned out as a key for a good adhesion performance. The end use T-peel resistance test of adhesive joints confirmed enhancement of adhesion performance. The highest strength improvement was achieved with 1% of SiO2 nanoparticles in PVAc adhesive.

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Section: Adhesion Performance Based On Surface Free Energiesmentioning

confidence: 99%

Enhancement of Polyvinyl Acetate (PVAc) Adhesion Performance by SiO2 and TiO2 Nanoparticles

et al. 2019

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“…As with other polymers, the use of fillers in vegetable‐oil‐based PUs yields products with modified performance 17, 18. Calcium carbonate and glass fibers are the most commonly used fillers 15, 19, 20. The former is primarily used to make cheaper formulations, and the latter is of great interest within reaction‐injection‐molding technology.…”

Section: Introductionmentioning

confidence: 99%

Usefulness of anti‐p155 autoantibody for diagnosing cancer‐associated dermatomyositis: A systematic review and meta‐analysis

Trallero-Araguás

Rodrigo-Pendás

Selva-O’Callaghan

et al. 2012

Arthritis & Rheumatism

294

195

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Objective. Anti-p155 autoantibody, which was recently described in adult patients with dermatomyositis (DM), seems to be associated with cancer in this population. We performed a systematic review and metaanalysis to ascertain the accuracy of anti-p155 testing for the diagnosis of cancer-associated myositis.Methods. We searched relevant databases, with no restrictions on study design or language, for original studies that included adult patients with probable/ definite DM or amyopathic DM who were evaluated for neoplasm and anti-p155 status. Pooled sensitivity and specificity were calculated using a bivariate model. We computed the diagnostic odds ratio (OR), likelihood ratios (LRs) for positive and negative test results, positive and negative predictive values, and the summary receiver operating characteristic (SROC) curve. Statistical heterogeneity between studies was assessed using the I 2 statistic, and 95% confidence intervals (95% CIs) were computed for the parameters studied.Results. Six studies including a total of 312 adult patients with DM were selected. The pooled sensitivity of anti-p155 for diagnosing cancer-associated DM was 78% (95% CI 45-94%), and specificity was 89% (95% CI 82-93%). The diagnostic OR was 27.26 (95% CI 6.59-112.82), and LRs for positive and negative test results were 6.79 (95% CI 4.11-11.23) and 0.25 (95% CI 0.08-0.76), respectively. Heterogeneity was substantial except with regard to the LR for a positive test result. The area under the SROC curve was 0.91 (95% CI 0.88-0.93). Taking the pooled prevalence of 17% as pretest probability, anti-p155 had a positive predictive value of 58% and a negative predictive value of 95%.Conclusion. Our findings indicate that anti-p155 autoantibody determination is useful for diagnosing cancer-associated myositis and guiding disease management.Idiopathic inflammatory myopathies are a group of systemic diseases that include dermatomyositis (DM), polymyositis, and sporadic inclusion body myositis. An association between cancer and idiopathic inflammatory myopathies, referred to as cancer-associated myositis, has been extensively reported in the medical literature. The overall cancer risk in these patients is higher than that in the age-and sex-matched general population, particularly during the 3 years following the diagnosis of myositis. Patients with DM have the highest risk of associated cancer (1-5). It is believed that almost onethird of DM cases develop as a paraneoplastic phenomenon.Cancer screening is common practice in patients recently diagnosed as having DM, but there is no consensus regarding how and how often screening should be performed. Several clinical and laboratory markers predictive of neoplasm have been proposed to identify patients with cancer-associated myositis in clin-

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“…The storage modulus curves show an enhanced rubbery plateau, indicating that the addition of filler induces a reinforcement effect. 19 At high temperatures, this reinforcement affects the strength. This behavior, the increase of storage modulus, further indicates reinforcement of the thermomechanical stability of these materials at higher temperatures.…”

Section: Dma Measurementsmentioning

confidence: 99%

Effect of preparation on morphology-properties relationships in SAN/EPDM/PCC composites

Vrsaljko

Hrnjak-Murgić

Blagojević

et al. 2010

Journal of Composite Materials

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Mechanical and morphological properties of composites containing styrene—acrylonitrile (SAN) copolymer, ethylene— propylene—diene (EPDM) polymer, and different types of precipitated calcium carbonate (PCC) were investigated and their properties were analyzed in regard to PCC surface properties and the way of sample preparation (with or without use of a masterbatch (MB)). Contact angles of test liquids on PCC samples were measured in order to determine surface free energies of filler and to predict strength of filler—polymer interactions. Filler—polymer interactions play a significant role in determining preferential localization of the filler in the composite. The tensile and impact strength results of the composites without the MB show much higher values than composites prepared with the MB. Significant decrease of tensile strength is observed for the samples prepared with the MB due to change in morphology, which is elongated dispersed EPDM particles in SAN matrix, compared to the samples prepared without the MB that have droplet morphology.

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Effect of calcium carbonate particle size and surface pretreatment on polyurethane composite Part I: interface and mechanical properties

Cited by 19 publications

References 14 publications

Enhancement of Polyvinyl Acetate (PVAc) Adhesion Performance by SiO2 and TiO2 Nanoparticles

Enhancement of Polyvinyl Acetate (PVAc) Adhesion Performance by SiO2 and TiO2 Nanoparticles

Usefulness of anti‐p155 autoantibody for diagnosing cancer‐associated dermatomyositis: A systematic review and meta‐analysis

Effect of preparation on morphology-properties relationships in SAN/EPDM/PCC composites

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