Synthesis and properties of polystyrene/polydimethylsiloxane graft copolymers

Wu, Ningjing; Likan, Huang; Zheng, Anna

doi:10.1007/s11458-006-0043-4

Cited by 7 publications

(15 citation statements)

References 10 publications

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“…PS spectrum shows an absorption band at 3026 cm −1 (Ref. ) associated to the vibration of HCCH bonds from aromatic rings and a vibration corresponding to –CH 2 – groups at 2860 cm −1 (Ref. ).…”

Section: Resultsmentioning

confidence: 99%

“…For the copolymer with the lower w PDMS value [S 89 DMS 11 , Figure 3(a)], a microphase separation is developed in which the dark PDMS pseudo-spheres can be distinguish among the white regions associated to PS. According to Wu et al, 22 and Sawyer and Drubb, 44 PS-b-PDMS copolymers showed microphase separation in which the dark and white regions represent the domains of PDMS and PS, respectively. This effect could be associated with the higher scatter ability of the Si atoms compared to C atoms, 22,44 as well as differences in the solubility parameter of each segment.…”

Section: Synthesis and Chemical Characterization Of Ps-b-pdms Copolymersmentioning

confidence: 98%

“…According to Wu et al, 22 and Sawyer and Drubb, 44 PS-b-PDMS copolymers showed microphase separation in which the dark and white regions represent the domains of PDMS and PS, respectively. This effect could be associated with the higher scatter ability of the Si atoms compared to C atoms, 22,44 as well as differences in the solubility parameter of each segment. 42 Also, for the S 45 DMS 55 copolymer [ Figure 3(b)] a kind of rod-like microphase separation can be appreciated.…”

Section: Synthesis and Chemical Characterization Of Ps-b-pdms Copolymersmentioning

confidence: 98%

“…In most cases, blocks are thermodynamically incompatible but the covalent bonds between them impose specific arrangements, by generating particular morphologies both in bulk and in solution. This behavior is a consequence of a microphase separation, induced by the thermodynamic incompatibility of the blocks …”

Section: Introductionmentioning

confidence: 99%

“…This behavior is a consequence of a microphase separation, induced by the thermodynamic incompatibility of the blocks. [14][15][16][17][18][19][20][21][22][23][24] Taking into account the facts already discussed, in this work we propose the use of poly(styrene-block-dimethylsiloxane) copolymers (PS-b-PDMS) as an effective alternative to improve flexibility and final properties of a commercial PS matrix. PS/PS-b-PDMS blends were prepared by using 5 and 10 wt % of copolymers and by employing a melt mixing process.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of mechanical and optical performance of commercial polystyrenes by blending with siloxane‐based copolymers

Ninago

Hanazumi

Passaretti

et al. 2017

J of Applied Polymer Sci

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Well‐defined poly(styrene‐block‐dimethylsiloxane) copolymers (PS‐b‐PDMS) with low polydispersity index (Mw/Mn) and different compositions were synthesized by sequential anionic polymerization of styrene (S) and hexamethyl(ciclotrisiloxane) (D3) monomers. Synthesized PS‐b‐PDMS copolymers were characterized by 1H‐nuclear magnetic resonance, size exclusion chromatography, Fourier transform infrared spectroscopy, and transmission electron microscopy. The physicochemical characterization determined that block copolymers have molar mass values close to ∼135,000 g mol−1, narrow Mw/Mn < 1.3, and chemical composition ranging from low to intermediate PDMS content. Blends of these copolymers with a commercial polystyrene (PS) were obtained by melt mixing and subsequently injection. Films obtained were flexible, and showed lower transparency than the original PS matrix. On the other hand, a 10 wt % incorporation of PS‐b‐PDMS copolymers leads to better mechanical performance by enhancing elongation at break (∼8.8 times higher) and opacity values (∼18 times higher). In addition, UV–Vis barrier capacity of the resulting blends is also increased (up to 400% higher). © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45122.

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Section: Resultsmentioning

confidence: 99%

Section: Synthesis and Chemical Characterization Of Ps-b-pdms Copolymersmentioning

confidence: 98%

Section: Synthesis and Chemical Characterization Of Ps-b-pdms Copolymersmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Enhancement of mechanical and optical performance of commercial polystyrenes by blending with siloxane‐based copolymers

Ninago

Hanazumi

Passaretti

et al. 2017

J of Applied Polymer Sci

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Effect of varying polydimethylsiloxane chain length and content on the adhesion and thermal properties of polydimethylsiloxane‐grafted acrylic pressure‐sensitive adhesives

Park

Seo

Kwon

et al. 2021

J of Applied Polymer Sci

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Acrylic pressure-sensitive adhesive (acrylic PSA) has advantages such as high adhesion, low cost, and high light transmittance, but it has a low adhesion to low-surface-energy substrates and low thermal stability. To solve these problems, PSA was modified with low surface energy moieties and crosslinked by UV curing. In this study, a polydimethylsiloxane (PDMS) structure with a low surface energy and good thermal properties was introduced into PSA through grafting polymerization to compensate for the disadvantages of acrylic PSA. PDMSgrafted acrylic PSAs (PGPs) were synthesized by grafting through method using macromonomers with PDMS of three different lengths. They showed improved loop tack and 180 peel strength values on polypropylene, a low-surface-energy substrate. However, when a long PDMS-based macromonomer (M w $ 5000) was used, phase separation was observed even at a low concentration, and the degree of improvement was decreased. The peel strength of PGPs significantly changed with dwelling time. As the surface energy difference between the substrate and PSA increased, the peel strength increased dramatically with dwelling time. 90 peel strengths measured with varying temperature (25-100 C) showed that a long PDMS chain was most effective in improving the thermal stability of the acrylic PSA by its own domains.

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Unveiling the composition of historical plastics through non-invasive reflection FT-IR spectroscopy in the extended near- and mid-Infrared spectral range

Rosi¹,

Miliani²,

Gardner

et al. 2021

Analytica Chimica Acta

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Synthesis and properties of polystyrene/polydimethylsiloxane graft copolymers

Cited by 7 publications

References 10 publications

Enhancement of mechanical and optical performance of commercial polystyrenes by blending with siloxane‐based copolymers

Enhancement of mechanical and optical performance of commercial polystyrenes by blending with siloxane‐based copolymers

Effect of varying polydimethylsiloxane chain length and content on the adhesion and thermal properties of polydimethylsiloxane‐grafted acrylic pressure‐sensitive adhesives

Unveiling the composition of historical plastics through non-invasive reflection FT-IR spectroscopy in the extended near- and mid-Infrared spectral range

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