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. 2015 May 12;5:10137. doi: 10.1038/srep10137

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(a-d) SEM images of fibers prepared from the PBLG₁₄₁-b-PEG₁₁₂/PBLG₂₄₁₁ mixtures with various molar ratios of PBLG-b-PEG block copolymer to PBLG homopolymer: (a) 130, (b) 35, (c) 14, and (d) 6. Scale bars: 200 nm; temperature: 20 °C. (e-h) Fragments of simulated structures for R₇C₃/R₁₅₀ mixtures with various mixture ratios φ: (e) φ = 165, (f) φ = 112.5, (g) φ = 80, and (h) φ = 52.5. The interaction parameter ε_RR is fixed as 2.1.