<i>In vivo</i>evaluation of a mucoadhesive polymeric caplet for intravaginal anti-HIV-1 delivery and development of a molecular mechanistic model for thermochemical characterization

Ndesendo, Valence M. K.; Choonara, Yahya E.; Meyer, Leith C. R.; Kumar, Pradeep; Tomar, Lomas K.; Tyagi, Charu; Toit, Lisa C. du; Pillay, Viness

doi:10.3109/03639045.2014.947506

Cited by 12 publications

(12 citation statements)

References 47 publications

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“…As depicted in Figure 2d, the presence of absorption peaks at 1100 and 430 cm −1 in GOPS‐treated samples can be assigned to the Si–O–Si absorption 49,50. Furthermore, the vibrational absorption peaks of –SO 3 groups (995–1125 cm −1 )51,52 upon the addition of GOPS confirmed the interactions between –SO 3 groups and GOPS, which is in accordance with the XPS results.…”

Section: Photovoltaic Performances Of Inverted Single Junction and Hosupporting

confidence: 85%

A Cross‐Linked Interconnecting Layer Enabling Reliable and Reproducible Solution‐Processing of Organic Tandem Solar Cells

Liu

Gao

et al. 2020

Advanced Energy Materials

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The performance of tandem organic solar cells (OSCs) is directly related to the functionality and reliability of the interconnecting layer (ICL). However, it is a challenge to develop a fully functional ICL for reliable and reproducible fabrication of solution‐processed tandem OSCs with minimized optical and electrical losses, in particular for being compatible with various state‐of‐the‐art photoactive materials. Although various ICLs have been developed to realize tandem OSCs with impressively high performance, their reliability, reproducibility, and generic applicability are rarely analyzed and reported so far, which restricts the progress and widespread adoption of tandem OSCs. In this work, a robust and fully functional ICL is developed by incorporating a hydrolyzed silane crosslinker, (3‐glycidyloxypropyl)trimethoxysilane (GOPS), into poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and its functionality for reliable and reproducible fabrication of tandem OSCs based on various photoactive materials is validated. The cross‐linked ICL can successfully protect the bottom active layer against penetration of high boiling point solvents during device fabrication, which widely broadens the solvent selection for processing photoactive materials with high quality and reliability, providing a great opportunity to continuously develop the tandem OSCs towards future large‐scale production and commercialization.

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Section: Photovoltaic Performances Of Inverted Single Junction and Hosupporting

confidence: 85%

A Cross‐Linked Interconnecting Layer Enabling Reliable and Reproducible Solution‐Processing of Organic Tandem Solar Cells

Liu

Gao

et al. 2020

Advanced Energy Materials

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“…Two peaks appear at 1466 cm -1 and 1352 cm -1 are due to CH2 scissoring and CH bending respectively. The FTIR spectra of polyamide-11 ( Fig.8) almost exactly coherent with the spectrum of polyamide-6 given in literature [20][21][22]. FTIR spectra of primer shows a broad weak peak at 3271 cm -1 due to the N-H stretching and CH2 stretching show peak at 2926 cm -1 (Fig.9).…”

Section: 3chemical Composition and Structure Analysissupporting

confidence: 84%

Poliamid 11 kaplamasının termal karakteristiği, yüzey morfolojisi, mekanik ve tribolojik özelliklerin incelenmesi

Murathan¹,

Kevran

2021

Politeknik Dergisi

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Bu çalışmanın amacı, akışkan yatağa daldırma yöntemi ile uygulanan poliamid kaplamanın mekanik ve kimyasal özelliklerinin incelenmesidir. Poliamid kaplama uygulaması için çelik test plakaları kullanılmıştır. Spreyleme ile astar uygulanmış test plakalarına, fırında ısıtma işlemi sonrası akışkan yatakta daldırma metoduyla poliamid kaplanmıştır. Kaplamanın mekanik dayanımının incelenmesi için aşınma dayanımı, çizilme testi, tuz testi ve sıcak yağa dayanım testleri yapılmıştır. Ayrıca kaplamanın termal karakteristiğini belirlemek amacı ile DSC, TGA analizleri yapılmıştır. Polimer kaplama ve astarın moleküler yapıları FTIR spektroskopisi ile analiz edilmiştir. Deneysel çalışma sonuçlarına göre, kaplamada yaklaşık olarak %50 su bulunduğu, kaplama yüzeyinin literatür araştırmalarına göre daha düzgün olduğu görülmüştür. Kaplamanın çizilme testi dayanımı 40N üzerindedir. Ağırlık testinde, 1,5kg yüke kadar kaplama yüzeyinde herhangi bir çatlak görülmemiştir. Aşınma testinde 1kg ek yükleme kullanılmasına rağmen, 5000 döngü sonrası poliamid kaplama iyi bir aşınma performansı sergilemiştir. Tuz testi ve sıcak yağ testleri sonrası kaplama yüzeyinde herhangi bir hata veya bozukluk gözlemlenmemiştir. Sonuç olarak akışkan yatağa daldırma metoduyla uygulanan poliamid toz kaplamaların, sert ve aşındırıcı çevrelerde ve mekanik dayanımın gerektiği mekanik parçalarda kullanılması uygundur. Anahtar Kelimeler: Poliamid kaplama, termal karakteristik, yüzey morfolojisi, triboloji.

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“…In the case of copolyamide, the peak at 3288 cm −1 represents the N-H stretching vibration. Two peaks at 2923 cm −1 and 2854 cm −1 represent the asymmetric -CH2 stretching and symmetric -CH2 stretching, respectively [32]. The band at 1637 cm −1 represents the -C=O stretching vibration.…”

Section: Fourier Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 99%

Copolyamide–Clay Nanotube Polymer Composite Nanofiber Membranes: Preparation, Characterization and Its Asymmetric Wettability Driven Oil/Water Emulsion Separation towards Sewage Remediation

et al. 2021

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To address the problem of ever-increasing oily wastewater management, due to its directional liquid transport property, membranes with asymmetric wettability can be effectively used for emulsion separation. This study reports the synthesis of electrospun polymer–clay nanocomposite nanofibers, using co-polyamide polymer (COPA) and halloysite nanotubes (HA) as filler. The influence of clay content on the morphological, thermal and dielectric properties of the polymer composite nanofiber was investigated comprehensively to address the material characteristics of the developed system. The surface structure analysis and contact angle measurements of the electrospun composite nanofibers confirms the change in surface roughness and wettability when the fillers are added to the polymer. The porosity of the composite electrospun nanofiber membrane was found to be 85% with an oil adsorption capacity of 97% and water permeability of 6265 L/m2 h. Furthermore, the asymmetric wettability-driven oil/water emulsion separation abilities of the as-synthesized membranes shows that the separation efficiency of the composite fiber membrane is 10% improved compared to that of the neat fiber membrane, with improved separation time.

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In vivoevaluation of a mucoadhesive polymeric caplet for intravaginal anti-HIV-1 delivery and development of a molecular mechanistic model for thermochemical characterization

Abstract: The obtained results, which were corroborated by MM simulations, attested that the developed system has the potential for effective delivery of anti-HIV-agents.

Cited by 12 publications

References 47 publications

A Cross‐Linked Interconnecting Layer Enabling Reliable and Reproducible Solution‐Processing of Organic Tandem Solar Cells

A Cross‐Linked Interconnecting Layer Enabling Reliable and Reproducible Solution‐Processing of Organic Tandem Solar Cells

Poliamid 11 kaplamasının termal karakteristiği, yüzey morfolojisi, mekanik ve tribolojik özelliklerin incelenmesi

Copolyamide–Clay Nanotube Polymer Composite Nanofiber Membranes: Preparation, Characterization and Its Asymmetric Wettability Driven Oil/Water Emulsion Separation towards Sewage Remediation

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