@article{jafari_shim_joijode_2021, title={Fabrication of Poly(lactic acid) filter media via the meltblowing process and their filtration performances: A comparative study with polypropylene meltblown}, volume={260}, ISSN={["1873-3794"]}, DOI={10.1016/j.seppur.2020.118185}, abstractNote={Poly(Lactic acid) (PLA) is considered as a promising alternative for petroleum-based synthetic plastic under the rising concerns over the environmental sustainability of polypropylene (PP) filter materials. To adapt PLA for the meltblown filter media production, it is necessary to establish how PLA polymer properties affect the meltblown process, media structure and filtration performance. We investigated the processability and effects of processing parameters on PLA meltblown structures and filtration performances in an industrially relevant setting by utilizing a commercially available low molecular weight PLA resin and a Reicofil meltblowing production line. We were able to fabricate PLA meltblown media comparable with PP meltblown media both in structures and filtration performances. Increasing airflow rate and decrease throughput reduced fiber diameter of PLA meltblown, but at the given processing condition, PLA meltblown tends to have larger fiber diameters than PP meltblown. However, larger diameter did not deteriorate the filtration efficiency of PLA meltblown. Interestingly, the filtration efficiency of PLA meltblown is higher than those of PP meltblown with similar fiber diameters. We also found the solidity of PLA meltblown lower than that of PP meltblown. This further improved filtration performance by improving air permeability. The quality factors of PLA meltblowns were more than double of PP meltblowns’ quality factors when fiber sizes are similar. PLA also exhibited comparable chargeability and charge stability with PP when corona charged.}, journal={SEPARATION AND PURIFICATION TECHNOLOGY}, author={Jafari, Mehran and Shim, Eunkyoung and Joijode, Abhay}, year={2021}, month={Apr} }
 @article{schuchard_joijode_willard_anderson_grondin_pourdeyhimi_shirwaiker_2021, title={Fabrication of drug-loaded ultrafine polymer fibers via solution blowing and their drug release kinetics}, volume={53}, ISSN={["2351-9789"]}, DOI={10.1016/j.promfg.2021.06.017}, abstractNote={Biocompatible polymer fibers have garnered significant interest due to their unique properties. Applications range from absorbent media to tissue engineering and drug delivery products. Many manufacturing processes produce such fibers, but a gap exists in highly scalable processes for fibers loaded with thermolabile additives like pharmaceuticals. This study investigates preliminary process-structure-function relationships of solution blown poly(ethylene oxide) fibers loaded with doxycycline, a drug that has demonstrated antibiotic, anti-inflammatory, and anti-tumoral properties. After parameter screening, a factorial experiment mapped the solution blowing design space with a multi-nozzle apparatus. A 1 mm-thick mat was fabricated comprising doxycycline loaded polymer fibers with a mean diameter of 552 ± 200 nm. Study of release kinetics showed the doxycycline released with a significant burst effect over approximately 1 minute. This study highlights solution blowing as a scalable manufacturing platform for fabricating poly(ethylene oxide) fibers loaded with this impactful drug.}, journal={49TH SME NORTH AMERICAN MANUFACTURING RESEARCH CONFERENCE (NAMRC 49, 2021)}, author={Schuchard, Karl and Joijode, Abhay and Willard, Vincent P. and Anderson, Bruce and Grondin, Pierre and Pourdeyhimi, Behnam and Shirwaiker, Rohan}, year={2021}, pages={128–135} }
 @misc{gurarslan_joijode_shen_narayanan_antony_li_caydamli_tonelli_2017, title={Reorganizing polymer chains with cyclodextrins}, volume={9}, number={12}, journal={Polymers}, author={Gurarslan, A. and Joijode, A. and Shen, J. L. and Narayanan, G. and Antony, G. J. and Li, S. S. and Caydamli, Y. and Tonelli, A. E.}, year={2017} }
 @article{kolbasov_sinha-ray_joijode_hassan_brown_maze_pourdeyhimi_yarin_2016, title={Industrial-Scale Solution Blowing of Soy Protein Nanofibers}, volume={55}, ISSN={["0888-5885"]}, DOI={10.1021/acs.iecr.5b04277}, abstractNote={Solution blowing is one of the most industrially viable processes for mass production of nanofibers without significant change of trade practices. In this work a novel industrially scalable approach to nanofiber production by solution blowing is demonstrated using Biax die. Blends of biopolymer soy protein isolate Clarisoy 100 and poly(ethylene oxide) (Mw = 600 kDa) were solution blown as aqueous solutions using a spinneret with 8 rows with 41 concentric annular nozzles. Nanofiber mats were collected on a drum, and samples with an area of the order of 0.1–1 m2 were formed in about 10 s. Nanofibers were relatively uniform with the diameters of about 500–600 nm. Theoretical aspects of capillary instability, dripping, and fly formation in solution blowing relevant from the experimental point of view are discussed, as well as ways of their prevention are revealed.}, number={1}, journal={INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH}, author={Kolbasov, Alexander and Sinha-Ray, Suman and Joijode, Abhay and Hassan, Mohammad Abouelreesh and Brown, Douglas and Maze, Benoit and Pourdeyhimi, Behnam and Yarin, Alexander L.}, year={2016}, month={Jan}, pages={323–333} }
 @article{caydamli_ding_joijode_li_shen_zhu_tonelli_2015, title={Estimating Monomer Sequence Distributions in Tetrapolyacrylates}, volume={48}, ISSN={["1520-5835"]}, DOI={10.1021/ma5019268}, abstractNote={Recently Ting et al. [ACS Macro Lett. 2013, 2, 770−774] described the syntheses of acrylic tetrapolymers with controlled molecular weights and tetramonomer compositions. Relative reactivity ratios of all monomer pairs were determined and used in the Walling–Briggs terminal copolymerization model along with Skeist’s equations to address the expected compositional drift in the monomer feed ratios. The anticipated control of monomer incorporation based on this approach was verified experimentally on several tetrapolyacrylates synthesized by RAFT polymerization, which additionally controlled their molecular weights. Their “new and simple paradigm combining both predictive models provides complementary synthetic and predictive tools for designing macromolecular chemical architectures with hierarchical control over spatially dependent structure–property relationships for complex applications” is extended here to the derivation of expected monad compositions, and diad, triad, and tetrad monomer sequence distribu...}, number={1}, journal={MACROMOLECULES}, author={Caydamli, Yavuz and Ding, Yi and Joijode, Abhay and Li, Shanshan and Shen, Jialong and Zhu, Jiadeng and Tonelli, Alan E.}, year={2015}, month={Jan}, pages={58–63} }
 @article{joijode_antony_tonelli_2013, title={Glass-transition temperatures of nanostructured amorphous bulk polymers and their blends}, volume={51}, ISSN={["1099-0488"]}, DOI={10.1002/polb.23306}, abstractNote={Nanostructured amorphous bulk polymer samples were produced by processing them with small molecule hosts. Urea (U) and gamma-cyclodextrin (γ-CD) were utilized to form crystalline inclusion compounds (ICs) with low and high molecular weight as-received (asr-) poly(vinyl acetate) (PVAc), poly(methyl methacrylate) (PMMA), and their blends as included guests. Upon careful removal of the host crystalline U and γ-CD lattices, nanostructured coalesced (c-) bulk PVAc, PMMA, and PVAc/PMMA blend samples were obtained, and their glass-transition temperatures, Tgs, measured. In addition, non-stoichiometric (n-s)-IC samples of each were formed with γ-CD as the host. The Tgs of the un-threaded, un-included portions of their chains were observed as a function of their degree of inclusion. In all the cases, these nanostructured PVAc and PMMA samples exhibited Tgs elevated above those of their as-received and solution-cast samples. Based on their comparison, several conclusions were reached concerning how their molecular weights, the organization of chains in their coalesced samples, and the degree of constraint experienced by un-included portions of their chains in (n-s)-γ-CD-IC samples with different stoichiometries affect their chain mobilities and resultant Tgs. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013, 51, 1041–1050}, number={13}, journal={JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS}, author={Joijode, Abhay S. and Antony, Gerry J. and Tonelli, Alan E.}, year={2013}, month={Jul}, pages={1041–1050} }
 @article{joijode_hawkins_tonelli_2013, title={Improving Poly(ethylene terephthalate) Through Self-nucleation}, volume={298}, ISSN={["1439-2054"]}, DOI={10.1002/mame.201200398}, abstractNote={Abstract As‐received poly(ethylene terephthalate) (asr‐PET) may be reorganized by precipitation from trifluoroacetic acid upon gradual addition to a large excess of rapidly stirred acetone (p‐PET). Unlike asr‐PET, p‐PET repeatedly crystallizes rapidly from the melt, and can be used in small quantities (a few %) as an effective self‐nucleating agent to control and improve the bulk semi‐crystalline morphology and properties of asr‐PET. Nuc‐PET film has significantly increased hardness and Young's modulus and is much less permeable to CO 2 , while its un‐drawn fibers exhibit higher tenacities and moduli. Because nuc‐PET contains no incompatible additives, it may be readily recycled. magnified image}, number={11}, journal={MACROMOLECULAR MATERIALS AND ENGINEERING}, author={Joijode, Abhay S. and Hawkins, KaDesia and Tonelli, Alan E.}, year={2013}, month={Nov}, pages={1190–1200} }
 @article{gurarslan_joijode_tonelli_2012, title={Polymers coalesced from their cyclodextrin inclusion complexes: What can they tell us about the morphology of melt-crystallized polymers?}, volume={50}, ISSN={["0887-6266"]}, DOI={10.1002/polb.23074}, abstractNote={Abstract Cyclodextrins (CDs) are cyclic polysaccharides with nano‐size, largely hydrophobic cavities, and exteriors covered with hydrophilic hydroxyl groups, making them water soluble. Threading and filling their cavities with polymer chains produces noncovalently bonded crystalline inclusion compounds (ICs). In this study, we formed fully covered, stoichiometric ICs between guest poly( L ‐lactic acid), poly(ε‐caprolactone), and nylon‐6 chains and host α‐CD. Coalesced samples of all three polymers were obtained after appropriately removing the stacked α‐CD host channels from their ICs. Distinct differential scanning calorimetriy (DSC) thermograms were observed for as‐received and coalesced samples, with the coalesced samples crystallizing faster at higher temperatures from their melts, and this distinction was maintained even after extensive, long‐time melt‐annealing (hours, days, and weeks). We believe this is due to the largely unentangled chains with extended conformations that are more densely packed in the initially coalesced samples. When small amounts (∼2 wt %) of the coalesced polymers are used as self‐nucleating agents for their as‐received samples, the resulting self‐nucleated samples show DSC thermograms similar to those of the neat coalesced polymers, including their long‐time stability to melt‐annealing. Coalesced polymers, whether neat or in samples they self‐nucleate, may conserve their organization in the melt (largely extended and unentangled chains) for long periods, because the process of entangling the many chains influenced by a single initially extended unentangled coalesced chain, after it randomly coils, is extremely sluggish. By contrast, in melt‐crystallized or solution‐cast samples, polymer chains generally become fully randomly coiled, interpenetrate, and entangle after being heated and held in their melts for comparatively much shorter times. For example, we have recently observed (DSC) that ultra high molecular weight, gel‐spun spectra polyethylene (PE) fibers ® did not conserve or retain any memory of their as‐spun and highly drawn semicrystalline morphology even after spending as little as 2 min in the melt. As a consequence of the comparison to the behavior of coalesced polymer melts, we believe that polyethylene chains in Spectra fibers ® must be at least intimately dispersed within their crystalline regions, and likely partially coiled and entangled in their noncrystalline regions, thereby facilitating their rapid transformation into a full entanglement network of randomly coiling chains in the melt. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012}, number={12}, journal={JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS}, author={Gurarslan, Alper and Joijode, Abhay S. and Tonelli, Alan E.}, year={2012}, month={Jun}, pages={813–823} }