Prediction of Quartz Crystal Microbalance Gas Sensor Responses Using Grand Canonical Monte Carlo Method

Polymers for Advanced Techs

Huizi

et al. 2019

A kind of bio‐based plasticizer, poly (hexanediol maleic) (MH), was synthesized using 1,6‐hexalene and maleic acid as raw materials, and it was modified by hydrosilicon‐hydrogenation reaction to improve its plasticizing efficiency. The chemical structure and plasticizing performance of MH and its modification product (MHA) were characterized by Fourier‐transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1H‐NMR), X‐ray photoelectron spectroscopy (XPS), and Dynamic mechanical analysis (DMA). It was found that the hydrosilicon‐hydrogenation modification effectively improved the plasticizing efficiency of MH, reflecting on the decreased Tg and the increased elongation at break of PVC blends. The migration resistance of PVC blends was tested and analyzed by solubility parameters, which revealed that the migration stabilities of PVC blends were promoted after modification. It was verified that the hydrogen bonding interaction between the CO group of plasticizers and α‐hydrogen of PVC exhibited in FTIR analysis was the main reason for the improvement of plasticizer performance of MH. Moreover, a new hydrogen bonding formed between SiOSi of MHA and the α‐hydrogen of PVC derived from XPS also caused the further improvement of plasticity for MHA.

bold-italicδ = {(bold-italicCED)}^{\frac{bold1}{bold2}} = ([], boldΔ bold-italicE / V_{i}) = \sum F_{i} / bold-italicM = bold-italicρ \sum F_{i} / bold-italicM = ((), x_{1} \sum F_{1} + x_{2} \sum F_{2} + ▪ ▪ ▪ + x_{n} \sum F_{n}) / ((), x_{1} V_{1} + x_{2} V_{2} + ▪ ▪ ▪ + x_{n} V_{n}),

…”

Section: Resultsmentioning

confidence: 99%

Application of a bio‐based polyester plasticizer modified by hydrosilicon‐hydrogenation reaction in soft PVC films

Polymers for Advanced Techs

Huizi

et al. 2019

“…Plasticizing e ciency of the copolyesters is calculated by elongation at break using Eq. (3) [34], and the results of plasticization e ciency are shown in Table 2.…”

Section: Plasticizing Propertymentioning

confidence: 99%

Structure Design, Performance Simulation and Plasticizing Properties of Bio-Based Copolyesters Plasticizer on PVC

et al. 2022

Plasticizer is an important assistant in the production process of polyvinyl chloride (PVC), which can effectively improve the plasticity of PVC. However, the durability and plasticizing effect of traditional phthalate plasticizers need to be further improved. In this paper, a variety of copolyesters are designed and synthesized from succinic acid, hexanediol and other four different diols. The plasticizing performance of the copolyester is characterized by FT-IR, H-NMR, XPS and DMA. It is found that the side chain groups in the structural units of the copolyester have a great in uence on its plasticizing properties. The glass transition temperature of PVC plasticized by polybutylene succinate 3-chloro-1,2-propanediol ester (PSCH) is 8.1℃ lower than the temperature of PVC which is plasticized by DOP, and the elongation at break is increased by 104.7%. The obtained copolyester plasticizer with exible long alkane chains and polar C-Cl groups shows improved solvent extraction resistance and better compatibility between plasticizer and PVC compared DOP. It is veri ed that the hydrogen bonding interaction between the C = O group of plasticizers and α-hydrogen of PVC exhibited in FT-IR, XPS and solubility parameters DS is the main reason for the effective plasticizing e ciency of PSCH on PVC.

Structure Design, Performance Simulation and Plasticizing Properties of Bio-Based Copolyesters Plasticizer on PVC

Wang

et al. 2022

Preprint

Plasticizer is an important assistant in the production process of polyvinyl chloride (PVC), which can effectively improve the plasticity of PVC. However, the durability and plasticizing effect of traditional phthalate plasticizers need to be further improved. In this paper, a variety of copolyesters are designed and synthesized from succinic acid, hexanediol and other four different diols. The plasticizing performance of the copolyester is characterized by FT-IR, H-NMR, XPS and DMA. It is found that the side chain groups in the structural units of the copolyester have a great influence on its plasticizing properties. The glass transition temperature of PVC plasticized by polybutylene succinate 3-chloro-1,2-propanediol ester (PSCH) is 8.1℃ lower than the temperature of PVC which is plasticized by DOP, and the elongation at break is increased by 104.7%. The obtained copolyester plasticizer with flexible long alkane chains and polar C-Cl groups shows improved solvent extraction resistance and better compatibility between plasticizer and PVC compared DOP. It is verified that the hydrogen bonding interaction between the C = O group of plasticizers and α-hydrogen of PVC exhibited in FT-IR, XPS and solubility parameters DS is the main reason for the effective plasticizing efficiency of PSCH on PVC.