Results 11 to 20 of about 1,629 (173)
A Circular and Tacticity-Independent Crystalline Mono-Substituted Nylon-6 Platform: Unexpected Large Positional Effects on Crystallizability and Performance. [PDF]
Angew Chem Int Ed EnglMethyl substitution positions on the nylon‐6 backbone markedly affect crystallizability, thermomechanical properties, and recyclability of the resulting atactic nylon‐6 variants. While γ‐methyl substitution gives an amorphous nylon, all other four methyl‐substitution positions (α, β, δ, and ε) afford, unexpectedly, crystalline nylons, showing tacticity‐
Tian JJ +9 more
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Defined Nylon Oligomers Enable Mechanistic Insight Into Enzymatic Polyamide Depolymerization. [PDF]
ChemSusChemThe remarkable progress in enzymatic polyester depolymerization has demonstrated the potential of biocatalysis for sustainable polymer recycling. In contrast, enzymatic polyamide (PA) degradation remains poorly understood, largely due to the lack of defined and accessible model substrates.
Dewi S +3 more
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Copolyamides of nylon‐4,6 and nylon‐4,T [PDF]
Journal of Polymer Science Part A: Polymer Chemistry, 1989 AbstractCopolyamides of nylon‐4,6 and nylon‐4,T were prepared by a two‐step method: (1) a prepolymerization in an autoclave (40 min at 210°C) and (2) a postcondensation in the solid state (4 h, 260°C). On these materials was studied the melting behavior with DSC, the crystalline structure with WAXS, the water absorption, and the mechanical properties ...
Gaymans, R.J., Aalto, S., Maurer, F.H.J.
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Comparison between surgical sutures and Prineo® in terms of esthetic result and scar formation [PDF]
Revista Brasileira de Cirurgia Plástica, 2017 INTRODUCTION: Wound healing is a well-organized, directed process of tissue repair. The process can be expedited using topical glues and adhesives, which offer a non-invasive, easily removable alternative to suturing. Furthermore, such products have good
Marcela Caetano Cammarota +9 more
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Oxidative Lactamization of Amino Alcohols: An Overview [PDF]
Journal of Chemistry Letters, 2020 Lactams are essential functional groups in a number of pharmacologically and biologically active compounds. They are widely found in many natural products, marketed drugs, as well as in the base of polymeric structures (e.g., polyamides/Nylons).
Lakashima Sreerama +2 more
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Continuous absorbable suture versus interrupted permanent suture in the treatment of diastasis of the rectus abdominis muscle [PDF]
Revista Brasileira de Cirurgia Plástica, 2016 INTRODUCTION: Plication of the rectus abdominis muscle is an important step in remodeling the abdomen in abdominoplasties. It can be performed using several types of threads with interrupted or continuous sutures, according to the surgeon's preferences ...
Leandro Fuchs +2 more
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Nonmetal clasp dentures: What is the evidence about their use?
The Journal of Indian Prosthodontic Society, 2020 The aim was to discuss the indications, contraindications, advantages, and disadvantages of Nonmetal clasp dentures (NMCDs), as well as the most relevant properties of its constituent materials.
Inti Mendoza-Carrasco +8 more
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The electrospinning of less common polyamides via direct and alternating current
eXPRESS Polymer Letters, 2023 This paper presents a method for direct and alternating current electrospinning of polymeric solutions of three less common polyamides (nylons). Homopolyamide PA 8, heteropolyamide PA 6|9 and semi-aromatic amide (phthalamide) PA 6(3)T were dissolved in ...
Pavel Holec +5 more
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Polímeros, 2005 Este trabalho avalia a polaridade superficial de cinco tipos de náilons: -6, -11, -6,6, -6,10, -6,12 usando a escala do pireno, py. Esses náilons podem ser classificados em duas categorias: AB (nálion-6 e -11) e AABB (nálion-6,6 e 6,10 e -6,12). A escala
Leonardo D. C. Baldi +1 more
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Recent Progress in Adipic Acid Synthesis Over Heterogeneous Catalysts
Frontiers in Chemistry, 2020 Adipic acid is one of the most important feedstocks for producing resins, nylons, lubricants, plasticizers. Current industrial petrochemical process, producing adipic acid from KA oil, catalyzed by nitric acid, has a serious pollution to the environment,
Wenjuan Yan +10 more
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