Preparation, characterization and modification of hyperbranched polyester-amide with core molecules

Kou, Yuxia; Wan, Ajun; Shen-yi, Tong; Wang, Li; Tang, Jinlong

doi:10.1016/j.reactfunctpolym.2007.05.022

Cited by 20 publications

(14 citation statements)

References 34 publications

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“…Due to the presence of electro negativity in HP-IM (contains two nitrogen present in the ring), the ester carbonyl (C O) peak was shifted to down field and therefore, three carbonyl carbons formed at 138 ppm, 140 ppm and 144 ppm, respectively. Similar observation was found from the literature report [17]. Percentages of carbon, hydrogen and nitrogen present in the modified HP are shown in the experimental section.…”

Section: Characterization Of Modified Hpsupporting

confidence: 91%

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Phosphorus based indole and imidazole functionalized hyperbranched polyester as antimicrobial surface coating materials

Karpagam

Guhanathan²

2014

Progress in Organic Coatings

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Section: Characterization Of Modified Hpsupporting

confidence: 91%

“…Similar results were observed for triethanolamine core of hyperbranched polyester, which was prepared from melt polycondensation process [3]. In an ideal case, the effect of core molecular functionality (f) on the molecular weight distribution can be described by the following expression [17]:…”

Section: Molecular Weight and Molecular Weight Distributionsupporting

confidence: 67%

Phosphorus based indole and imidazole functionalized hyperbranched polyester as antimicrobial surface coating materials

Karpagam

Guhanathan²

2014

Progress in Organic Coatings

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“…1,2 Contrary to linear polymers, hyperbranched polymers contain a large number of branching points and functional groups in the periphery, which gives them their unique physical and chemical properties. [3][4][5][6][7][8] Hyperbranched polymers exhibit much lower solution and molten state viscosities than linear polymers. This is due to the lack of entanglements, which results from their packed structure.…”

Section: Introductionmentioning

confidence: 99%

Effect of tall oil fatty acids content on the properties of novel hyperbranched alkyd resins

Murillo

Vallejo

López

2011

J of Applied Polymer Sci

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Hyperbranched alkyd resins (HBRA) were synthesized by modification of hydroxylated hyperbranched polyester (HBP1-4) with tall oil fatty acids (TOFA). The core is a hydroxylated hyperbranched polyester of fourth generation with OH groups in the periphery (18), which is endcapped with tall oil fatty acids. The occurrence of these reactions, HBP1-4 and TOFA, was determined by making use of acid value, nuclear magnetic resonance, and hydroxyl values. The effects of TOFA and HBP1-4 on properties of the HBRA resins were investigated by vapor pressure osmometry, differential scanning calorimetry, thermogravimetric analysis, friction resistance, and hardness. The resins with higher modification percentage (HBRA4) presented the best thermal and hydrolytic stability, but lower friction resistance and hardness. All HBRA resins presented amorphous characteristics, OH groups, and double bonds in the periphery.

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“…Because of its unique physical and chemical properties and potential applications in various fields, such as coatings, additives, drug delivery, nanotechnology, and supramolecular science, the interest in HBP is growing rapidly, as confirmed by the increasing number of publications [3][4][5]. HBP containing double-bond groups has been successfully used in UV-cured flame retardant coatings [6] and HBP containing epoxy groups functioned as additive for toughening and reinforcing thermosetting resin [7,8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of a Novel Low‐Viscosity Unsaturated Hyperbranched Polyester Resin

Zhang

Wang

et al. 2010

Chem Eng & Technol

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Hyperbranched thermosetting resin is the best additive for toughening and reinforcing linear thermosetting resin. A novel low-viscosity unsaturated hyperbranched polyester resin (UHPR) is synthesized by the reaction between maleic anhydride monoisooctyl alcohol ester and a hydroxyl-ended hyperbranched polyester resin (HPR) prepared from phthalic anhydride (PA) and trimethylolpropane (TMP). The structure of HPR is characterized by FT-IR and 1 H NMR, and its degree of branching is deduced by comparing with the 1 H NMR spectrum of a model compound. The molecular weights of HPR and UHPR are determined by theoretical calculation and MALDI-TOF MS measurements. This low-viscosity (< 10 000 cP) novel UHPR can be applied in the field of environment-friendly coatings and in toughening and reinforcing linear unsaturated polymers.

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Preparation, characterization and modification of hyperbranched polyester-amide with core molecules

Cited by 20 publications

References 34 publications

Phosphorus based indole and imidazole functionalized hyperbranched polyester as antimicrobial surface coating materials

Phosphorus based indole and imidazole functionalized hyperbranched polyester as antimicrobial surface coating materials

Effect of tall oil fatty acids content on the properties of novel hyperbranched alkyd resins

Synthesis and Characterization of a Novel Low‐Viscosity Unsaturated Hyperbranched Polyester Resin

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