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Mr Alexander Chidara
PhD Student

Research area(s)

My research interests focus on rigid PVC-u circular economy systems, combining ontology-based reasoning, big data analytics, Life Cycle Assessment, Lean Six Sigma, World Class Manufacturing, business improvement, economics, investment strategy, and net-zero industrial transformation. My work examines how rigid PVC-u recycling and sustainable manufacturing can be improved through digital decision-support systems, operational excellence, industrial data integration, and circular economy business models.

I am particularly interested in how rigid PVC-u waste streams from manufacturing and construction sectors can be transformed into higher-value circular resources through sustainable process design, industrial collaboration, economic analysis, investment planning, and policy-driven global strategies.

Research Interests

  • Circular economy in rigid PVC-u recycling systems, with emphasis on closed-loop recycling, resource efficiency, waste reduction, and sustainable polymer recovery.
  • Ontology-based reasoning for rigid PVC-u sustainability, using Protégé, semantic modelling, SWRL rules, and SPARQL queries to support circular economy decision logic.
  • Big data analytics for rigid PVC-u sustainability decision-making, including industrial data integration, process monitoring, predictive analysis, and evidence-based recycling decisions.
  • Net-zero manufacturing for rigid PVC-u systems, focusing on low-carbon production, emissions reduction, energy efficiency, and industrial decarbonisation.
  • Life Cycle Assessment of rigid PVC-u recycling and manufacturing, including carbon footprint, embodied energy, water use, waste generation, and environmental impact assessment.
  • Sustainable rigid PVC-u polymer systems and composite materials, including recycled PVC-u, reinforced PVC-u composites, stabilisers, additives, fillers, and circular product design.
  • Rigid PVC-u material sustainability and recycling strategies, focusing on material recovery, contamination control, quality classification, recyclate performance, and end-of-life management.
  • Industrial application of rigid PVC-u circular economy models, particularly in windows, doors, construction products, manufacturing waste, and post-consumer recycling systems.
  • Lean application for monitoring and controlling rigid PVC-u manufacturing processes, including KPI systems, OEE, process mapping, standard work, visual management, and waste elimination.
  • World Class Manufacturing approaches for rigid PVC-u production and recycling, integrating safety, quality, cost, delivery, people development, autonomous maintenance, and continuous improvement.
  • Lean Six Sigma for rigid PVC-u process optimisation, including DMAIC, 5S, Kaizen, VSM, SMED, TPM, A3 problem solving, 8D, Five Whys, Fishbone analysis, and root-cause problem solving.
  • Quality improvement in rigid PVC-u recycling and manufacturing, including FMEA, PFMEA, DFMEA, control plans, SPC, process capability, defect reduction, and right-first-time performance.
  • Digital monitoring systems for rigid PVC-u circular manufacturing, including real-time data capture, dashboards, traceability, digital process control, and intelligent decision-support systems.
  • Intelligent manufacturing and data-driven decision-support systems for rigid PVC-u, combining ontology, analytics, LCA, Lean systems, and manufacturing performance data.
  • Additive technologies for improving rigid PVC-u circularity, including stabilisers, fillers, reinforcement materials, recycled-content optimisation, durability improvement, and recyclability enhancement.
  • Additive manufacturing and rigid PVC-u circular economy opportunities, exploring how advanced manufacturing, recycled polymer feedstock, tooling innovation, and digital production can support circular manufacturing.
  • Machining and processing of rigid PVC-u from linear economy to circular economy, focusing on waste minimisation, material reuse, process efficiency, rework reduction, and sustainable production planning.
  • Consumer demand for sustainable rigid PVC-u products, including market behaviour, eco-labelling, customer acceptance, sustainable construction demand, and green product communication.
  • Business systems improvement in rigid PVC-u manufacturing, focusing on operational excellence, business re-engineering, productivity, quality improvement, cost reduction, and sustainable competitiveness.
  • Circular economy business models for rigid PVC-u recycling, including take-back systems, remanufacturing, closed-loop supply chains, recycled-content markets, and value-chain collaboration.
  • Investment strategies for rigid PVC-u circular economy systems, including capital investment, recycling infrastructure, technology adoption, return on investment, and circular manufacturing finance.
  • Economic value of sustainable rigid PVC-u initiatives, including cost-benefit analysis, circular economy valuation, waste-to-value models, productivity improvement, and long-term business returns.
  • Microeconomic analysis of rigid PVC-u circular economy systems, including firm-level costs, process efficiency, pricing, profitability, productivity, resource allocation, and market competitiveness.
  • Macroeconomic analysis of rigid PVC-u circular economy implementation, including GDP contribution, industrial productivity, green jobs, national recycling capacity, construction-sector sustainability, and economic resilience.
  • Global strategies for rigid PVC-u recycling and circular economy investment, including international policy alignment, industrial standards, supply-chain collaboration, foreign investment, and sustainable manufacturing competitiveness.
  • Policy interventions for rigid PVC-u circular economy development, including extended producer responsibility, recycling standards, green procurement, net-zero policy, and circular economy regulation.
  • Sustainability accounting and financial performance in rigid PVC-u recycling, including environmental cost accounting, carbon valuation, investment appraisal, ESG reporting, and circular economy profitability.
  • Health, safety, and environmental impacts of rigid PVC-u production and recycling, including occupational exposure, emissions, additives, process safety, waste handling, and environmental risk management.
  • Community engagement and public awareness of rigid PVC-u sustainability, including recycling behaviour, construction-sector awareness, public trust, stakeholder participation, and circular economy education.
  • Industry–academia collaboration in rigid PVC-u sustainable engineering, focusing on industrial case studies, real manufacturing data, applied research, technology transfer, and practical net-zero implementation.
  • Strategic management of rigid PVC-u circular economy systems, including business strategy, operations strategy, risk management, stakeholder governance, and long-term industrial transformation.
  • Global circular economy competitiveness in rigid PVC-u manufacturing, examining how countries, industries, and firms can use sustainable PVC-u recycling to strengthen productivity, trade, innovation, and green industrial growth.