Research outputs

• Pickering, K., Barton, B., Beg, D., Collins, E., Mika, J., & Oxley, L. (2025, September). Getting to circular: A summary of Āmiomio Aotearoa, a circular economy for the wellbeing of New Zealand (opens in a new tab). University of Waikato.

• Blumhardt, H., Diprose, G., Collins, E., Peryman, M., & Worden, D. (2025). Reusable packaging in the grocery sector: Understanding impacts and outcomes (opens in a new tab). Āmiomio Aotearoa; Reuse Aotearoa.

• Bachmann, P. A., Pickering, K., & Gauss, C. (2025). Combining hydromorphic and shape-shifting effects for programmable passive actuation in 4D-printed biocomposites (opens in a new tab). Composites Part C: Open Access, 100632. 
• O'Sullivan, A., & Pickering, K. (2025). Water, the foundational material of life, and its treatment using regenerative materials (opens in a new tab). Water New Zealand, (240), 60–62.
• Hodge, S., Barrett, P., & Kurian, P. (2025). The circular economy in Aotearoa New Zealand: a critical evaluation of policy and its current prospects (opens in a new tab). Kōtuitui: New Zealand Journal of Social Sciences Online, 1–20. 
• Thundathil M., Müssig J., Nazmi A., Shahri B., Emerson N., Huber T., (2025). Designing Sustainable Materials: The Role of Material Perception in Consumer Acceptance (opens in a new tab). New Design Ideas, 9(1), 30-59.
• Allouche, W., Pickering, K., Gauss, C., & Beg, M. (2025). Thermoplastic composites in sustainable construction: Topology optimisation and additive manufacturing for a recyclable and modular building system (opens in a new tab). In Proceedings of the 30th International Conference of the Association for Computer-Aided Architectural Design Research in Asia (CAADRIA 2025) (pp. 417–426). Association for Computer-Aided Architectural Design Research in Asia (CAADRIA). 
• Gharanjig, H., Najaf Zadeh, H., Stevens, C., Abhayawardhana, P., Huber, T., & Nazmi, A. R. (2025). Development of Extrudable Hydrogels Based on Carboxymethyl Cellulose–Gelatin Complex Coacervates (opens in a new tab). Gels, 11(1), 51. 
• Barton, B. (2024). Critical minerals strategies, net zero, and natural resources law (opens in a new tab). In D. Olawuyi et al. (Eds.), Net zero and natural resources law (pp. 71–88). Oxford University Press. 
• Akindoyo, J. O., Pickering, K. L., Beg, M. D. H., & Li, Y. (2024). Reactive compatibilization of harakeke fiber-reinforced poly(lactic acid)/polybutylene succinate blend (opens in a new tab). Journal of Applied Polymer Science, 141(40), e56030.
• Beg, M. D. H., Pickering, K. L., Akindoyo, J. O., & Gauss, C. (2024). Recyclable hemp hurd fibre-reinforced PLA composites for 3D printing (opens in a new tab). Journal of Materials Research and Technology, 33, 4439–4447.
• Graupner, N., Gauss, C., Pickering, K., Schmidt, S., & Müssig, J. (2024). Fibrillation - Improving the fibre/matrix adhesion of lyocell fibres for use in short fibre-reinforced and 3D printed composites (opens in a new tab). The European Society for Composite Materials (ESCM) and the Ecole Centrale de Nantes. 
•  Xu, J., Mucalo, M. R., & Pickering, K. L. (2024). Bioinspired surface modification of mussel shells and their application as a biogenic filler in polypropylene composites (opens in a new tab). Composites Part C: Open Access, 15, 100520. 
• Matinong, A.M.E., Pickering, K.L., Waterland, M.R., Chisti, Y., Haverkamp, R.G. (2024). Gelatin and Collagen from Sheepskin (opens in a new tab). Polymers, 16, 1563. 
• Akindoyo, J. O., Pickering, K., Mucalo, M., Beg, M. D., & Hicks, J. (2024). Mechanenzymatic production of natural fibre from harakeke (New Zealand flax) and its characterization for potential use in composites for building and construction applications (opens in a new tab). Industrial Crops and Products.
• Mika, J., Oxley, L., Claus, I., Roa, T., Morrison, S., & Peryman, M. (2024, May 13). Āmiomio: Toward a framework for sustainable wellbeing—A New Zealand perspective (Version 2). University of Waikato. Unpublished manuscript.
• Muthe, L. P., Pickering, K., & Gauss, C. (2024). Polylactide composites reinforced with pre-impregnated natural fibre and continuous cellulose yarns for 3D printing applications (opens in a new tab). Materials, 17(22), 5554. 
• Greene, A. F., Abbel, R., Vaidya, A. A., Tanjay, Q., Chen, Y., Risani, R., Saggese, T., Barbier, M., Petcu, M., West, M., Theobald, B., Gaugler, E., & Parker, K. (2023). Environmentally Benign Fast-Degrading Conductive Composites (opens in a new tab). Biomacromolecules. 
• Blumhardt, H. (2023). Current and future approaches to shifting businesses towards plastic-free packaging systems based on reduction and reuse (opens in a new tab). Cambridge Prisms: Plastics, 1, E18.
• Gauss, C., Pickering, K. L., Graupner, N., & Müssig, J. (2023). 3D-printed polylactide composites reinforced with short lyocell fibres – Enhanced mechanical properties based on bio-inspired fibre fibrillation and post-print annealing (opens in a new tab). Additive Manufacturing.
• Beg, M.D.H., Pickering, K. L., & Gauss, C. (2023). The effects of alkaline digestion, bleaching, and ultrasonication treatment of fibre on 3D printed harakeke fibre reinforced polylactic acid composites (opens in a new tab) Composites Part A: Applied Science and Manufacturing.
• Gunasekara, L. A., Robb, D. J., & Zhang, A. (2023). Used product acquisition, sorting, and disposition for circular supply chains: Literature review and research directions (opens in a new tab). International Journal of Production Economics.
• Liu, Y., Farooque, M., Lee, C. H., Gong, Y., & Zhang, A. (2023). Antecedents of circular manufacturing and its effect on environmental and financial performance: A practice-based view (opens in a new tab). International Journal of Production Economics.
• Nelson, J., Pickering, K. L., & Beg, M.D.H. (2023). Assessment of the potential of waste Copper Chromium and Arsenic (CCA)-treated timber fibre reinforced polypropylene composites for construction (opens in a new tab). Journal of Composites Science.

• Diprose, G., Lee, L., Blumhardt, H., Walton, S., & Greenaway, A. (2023). Reducing single-use packaging and moving up the waste hierarchy. (opens in a new tab) Kōtuitui: New Zealand Journal of Social Sciences Online, 18(3), 268-289.

• Zhang, A., Duong, L., Seuring, S., & Hartley, J. (2023). Circular supply chain management: A bibliometric analysis-based literature review (opens in a new tab). International Journal of Logistics Management, 34(3), 847-872

• Thundathil M., Nazmi AR., Shahri B., Emerson N., Mussig J. and Huber T. (2023) Designing with biobased composites: understanding digital material perception through semiotic attributes (opens in a new tab). Design Science 9(6) doi:10.1017/dsj.2023.5.

• Thundathil M., Nazmi AR., Shahri B., Emerson N., Müssig J. and Huber T. (2023) Visual–Tactile Perception of Biobased Composites (opens in a new tab). Materials 16(5) doi:10.3390/ma16051844.
• Akindoyo, J., Pickering, K., Beg, M.D.H., & Mucalo, M. (2022). Combined digestion and bleaching of New Zealand flax/harakeke fibre and its effects on the mechanical, thermal, and dynamic mechanical properties of poly(lactic) acid matrix composites (opens in a new tab). Composites Part A: Applied Science and Manufacturing.
• Barton, B. (2022). Building Resilience from the Ground Up: Local Supply and Demand Management with Renewables, Prosumers, Energy Efficiency, Critical Minerals, and the Circular Economy (opens in a new tab). In C. Banet, H. Mostert, L. Paddock, M. F. Montoya, and I. del Guayo (Eds.), Resilience in Energy, Infrastructure, and Natural Resources Law: Examining Legal Pathways for Sustainability in Times of Disruption (opens in a new tab) (pp. 327-341). Oxford University Press, doi:10.1093/oso/9780192864574.003.0020.
• Blumhardt, H. (2022). My Product, My Right to Repair it. In A. Pendergrast & K. Pendergrast (Eds.), More Zeros and Ones: Digital Technology, Maintenance and Equity in Aotearoa New Zealand (opens in a new tab). Bridget Williams Books.
• Blumhardt, H. & Prince, L. From lines to circles: Reshaping waste policy. Policy Quarterly, 18(2), 71-80.
• Burke, H., Zhang, A., & Wang, J. X. (2021). Integrating product design and supply chain management for a circular economy (opens in a new tab). Production Planning & Control, 1-17.
• Farooque, M., Zhang, A., Liu, Y., & Hartley, J. L. (2022). Circular supply chain management: Performance outcomes and the role of eco-industrial parks in China (opens in a new tab). Transportation Research Part E: Logistics and Transportation Review, 157, 102596.
• Manu, T., Nazmi, A. R., Shahri, B., Emerson, N., & Huber, T. (2022). Biocomposites: A Review of Materials and Perception (opens in a new tab). Materials Today Communications, 103308.
• Matinong, A. M., Chisti, Y., Pickering, K. L., & Haverkamp, R. G. (2022). Collagen extraction from animal skin. Biology, 11(905), 1-15.
• Wang, J. X., Burke, H., & Zhang, A. (2022). Overcoming barriers to circular product design (opens in a new tab). International Journal of Production Economics, 243, 108346.
• Zaw, W. T. (2022). Right to Repair: The Obstacles in the Current Law (opens in a new tab). The New Zealand Law Journal.
• Zaw, W. T. (2022) Right to repair: How to design new law reforms (opens in a new tab). The New Zealand Law Journal. 
• Zhang, A., Wang, J. X., Farooque, M., Wang, Y., & Choi, T. M. (2021). Multi-dimensional circular supply chain management: A comparative review of the state-of-the-art practices and research (opens in a new tab). Transportation Research Part E: Logistics and Transportation Review, 155, 102509.

UN Climate Change Conference COP26 Symposium

• Barton, B. (2021, November). Commentary on what's important. In T. Gibbons (Chair), Local panel: Law, science & innovation (opens in a new tab). Symposium conducted at the UN Climate Change Conference COP26, Glasgow, Waikato Event.
• Oxley, L. (2021, November). Circular Economy. In F. Scrimgeour (Chair), Local panel: Finance and economics. (opens in a new tab) Symposium conducted at the UN Climate Change Conference COP26, Glasgow, Waikato Event.
• Roa, T. (2021, November). Introductory Comments. In S. Morrison (Chair), Local panel: Setting the scene - what's to come! (opens in a new tab) Symposium conducted at the UN Climate Change Conference COP26, Glasgow, Waikato Event.

Opinion pieces

• Zaw, T. (2024). How long should everyday appliances last? Why NZ needs a minimum product lifespan law (opens in a new tab). The Conversation.
• Blumhardt, H. (2023, June 28). Kicking the single-use plastic habit (opens in a new tab). Newsroom.
• Pritchett, S., Blumhardt, H., Austin, G., & Smith, P. (2022, October 13). What happened to No 8 wire? Give us back our right to repair (opens in a new tab). Newsroom.
• Blumhardt, H. (2021, November 3). NZ’s government plans to switch to a circular economy to cut waste and emissions, but it’s going around in the wrong circles (opens in a new tab). The Conversation. 
• Walton, S. (2021, August 2). What goes around ... moves around (opens in a new tab). Otago Daily TImes.

Reports

• Blumhardt, H. (2023).  Working Paper: Regulating products, production, and consumption for a Circular Economy in Aotearoa New Zealand (opens in a new tab).
• Nelson, J. M. B., Elliot, G., Pickering, K. L., & Beg, M. D. H. (2022). Preliminary materials flow analysis for Aotearoa New Zealand’s building construction sector (opens in a new tab). University of Waikato.
• Diprose, G., Walton, S., Greenaway, A., and Collins, E. 2022. How is the circular economy emerging in Aotearoa New Zealand? Research Brief (opens in a new tab).

• Diprose, G., Walton, S., Greenaway, A., and Collins, E. 2022. How is the circular economy emerging in Aotearoa New Zealand? Infographic (opens in a new tab).

Database

• Nelson, J., Elliot, G., Pickering, K., & Beg, M.D. (2022). Construction and demolition material flow database (opens in a new tab).

Policy Submissions

• Submission on the Transforming Recycling Consultation
• Submission on the Emissions Reduction Plan Consultation
• Written Submission to the Petition Committee on the petition of Repair Café Aotearoa NZ - Make it our Right to Repair (opens in a new tab)

Media Releases

• Waikato event connects to COP26 and climate change crisis
• Have your say and shape the emissions reduction plan (opens in a new tab)
• Waikato researchers help launch circular economy initiatives for business
• Mussel shell house cladding could help cut landfill waste by half — researchers say (opens in a new tab)
• NZ’s government plans to switch to a circular economy to cut waste and emissions, but it’s going around in the wrong circles (opens in a new tab)